{"product_id":"bludive-bd42-2500lm-618m-dive-torch-150m-underwater-with-21700-battery","title":"BLUDIVE BD42 2500LM 618M Dive Torch 150m Underwater With 21700 Battery","description":"\u003cstyle\u003e\n    \/* 🏆 Bludive Universal Hero Banner \u0026 Layout Style *\/\n    .speras-pdp-container { font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif; color: #333; line-height: 1.6; max-width: 950px; margin: 0 auto; padding: 20px; }\n    .speras-hero-banner { background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); padding: 50px 30px; border-radius: 20px; margin-bottom: 40px; text-align: center; border-bottom: 6px solid #0078D4; box-shadow: 0 10px 25px rgba(0,0,0,0.15); }\n    .speras-hero-banner h1 { font-size: 38px; font-weight: 900; color: #ffffff !important; margin: 0 0 15px 0; line-height: 1.3; }\n    .speras-hero-banner .subtitle { font-size: 18px; max-width: 850px; margin: 0 auto 20px auto; color: #cbd5e1 !important; line-height: 1.7; }\n    \n    \/* Comparison Table \/ Formatting *\/\n    .speras-table-wrapper { overflow-x: auto; 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border-radius: 8px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); display: block; margin: 0 auto; }\n\n    \/* ========== 手机端字体防重叠优化（仅新增响应式规则） ========== *\/\n    @media (max-width: 768px) {\n        .speras-pdp-container {\n            padding: 16px;\n        }\n        \/* 全局断行，防止长单词\/链接溢出 *\/\n        .speras-pdp-container * {\n            max-width: 100%;\n            word-break: break-word;\n            overflow-wrap: break-word;\n        }\n        \/* 头部区域 *\/\n        .speras-hero-banner {\n            padding: 30px 16px;\n        }\n        .speras-hero-banner h1 {\n            font-size: 28px !important;\n            line-height: 1.3 !important;\n        }\n        .speras-hero-banner .subtitle {\n            font-size: 15px !important;\n            line-height: 1.5 !important;\n        }\n        \/* 表格：减小内边距和字体，保持横向滚动 *\/\n        .speras-table th,\n        .speras-table td {\n            padding: 12px 12px !important;\n            font-size: 14px !important;\n        }\n        .speras-table th {\n            font-size: 14px !important;\n        }\n        \/* 左右图文模块：改为上下排列，避免文字图片挤压 *\/\n        .speras-feature-row {\n            flex-direction: column !important;\n        }\n        .speras-feature-text {\n            padding: 20px !important;\n            width: 100%;\n        }\n        .speras-feature-img {\n            padding: 0 20px 20px 20px !important;\n            width: 100%;\n        }\n        .speras-feature-text h3 {\n            font-size: 20px !important;\n            line-height: 1.4 !important;\n        }\n        .speras-feature-text p {\n            font-size: 15px !important;\n            line-height: 1.5 !important;\n        }\n        \/* 场景卡片区域 *\/\n        .speras-section-title {\n            font-size: 24px !important;\n            margin-top: 40px !important;\n            margin-bottom: 20px !important;\n        }\n        \/* 包装清单的两列改为单列，防止文字重叠 *\/\n        .speras-pdp-container ul[style*=\"columns: 2\"] {\n            columns: 1 !important;\n            -webkit-columns: 1 !important;\n            -moz-columns: 1 !important;\n            font-size: 14px !important;\n            padding-left: 20px !important;\n        }\n        \/* 技术规格与包装区块的内边距缩小 *\/\n        .speras-pdp-container div[style*=\"background: #fafafa; padding: 30px\"],\n        .speras-pdp-container div[style*=\"background: #fff; padding: 30px\"] {\n            padding: 20px !important;\n        }\n        \/* 底部CTA区域 *\/\n        .speras-pdp-container div[style*=\"border: 2px solid #0078D4\"] h2 {\n            font-size: 24px !important;\n            line-height: 1.3 !important;\n        }\n        .speras-pdp-container div[style*=\"border: 2px solid #0078D4\"] p {\n            font-size: 15px !important;\n            padding: 0 12px !important;\n        }\n        .speras-pdp-container a[href=\"#top\"] {\n            padding: 12px 24px !important;\n            font-size: 16px !important;\n            white-space: normal;\n        }\n        \/* FAQ 折叠面板 *\/\n        details {\n            padding: 14px 16px !important;\n        }\n        details summary {\n            font-size: 16px !important;\n            line-height: 1.4 !important;\n        }\n        details p {\n            font-size: 14px !important;\n            line-height: 1.5 !important;\n        }\n        \/* 其他内嵌文本微调 *\/\n        .speras-pdp-container p, \n        .speras-pdp-container li,\n        .speras-pdp-container span:not(.speras-highlight-col) {\n            font-size: 15px;\n            line-height: 1.5;\n        }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"speras-pdp-container\"\u003e\n\u003cdiv class=\"speras-hero-banner\"\u003e\n\u003cspan style=\"display: inline-block; background: #0078D4; color: #fff; padding: 6px 18px; border-radius: 30px; font-size: 14px; font-weight: 800; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 15px;\"\u003eFocused Professional Dive Torch\u003c\/span\u003e\n\u003ch1\u003eBLUDIVE BD42: 2500lm Narrow Beam Dive Light\u003c\/h1\u003e\n\u003cp class=\"subtitle\"\u003eWhen you’re diving in low visibility, having a reliable light makes a noticeable difference. The \u003cstrong style=\"color: #0078d4;\"\u003eBludive BD42\u003c\/strong\u003e is a highly focused dive torch built to handle extreme conditions. Powered by a Luminus SFT42R LED, it delivers \u003cstrong\u003e2500 lumens\u003c\/strong\u003e combined with a laser-like \u003cstrong\u003e4° beam\u003c\/strong\u003e that penetrates murky waters and significantly reduces backscatter.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; margin-top: 15px;\"\u003e\n\u003cspan style=\"background: rgba(255,255,255,0.1); color: #fff; padding: 6px 16px; border-radius: 20px; font-size: 13px;\"\u003e💡 2500 Lumens\u003c\/span\u003e \u003cspan style=\"background: rgba(255,255,255,0.1); color: #fff; padding: 6px 16px; border-radius: 20px; font-size: 13px;\"\u003e🎯 618m Throw\u003c\/span\u003e \u003cspan style=\"background: rgba(255,255,255,0.1); color: #fff; padding: 6px 16px; border-radius: 20px; font-size: 13px;\"\u003e⚓ 150m Waterproof\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center; margin-bottom: 50px; max-width: 850px; margin-left: auto; margin-right: auto;\"\u003e\u003cimg style=\"width: 100%; height: auto; border-radius: 12px; box-shadow: 0 8px 25px rgba(0,0,0,0.08); display: block;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD42-1.jpg?v=1762834807\" alt=\"Bludive BD42 2500 lumens high lumen narrow beam dive light 150m waterproof\" class=\"speras-zoom\"\u003e\u003c\/div\u003e\n\u003ch2 class=\"speras-section-title\"\u003eBludive Series: BD42 vs BD40 Pro\u003c\/h2\u003e\n\u003cp style=\"text-align: center; color: #475569; margin-bottom: 30px; font-size: 16px;\"\u003eBoth are professional dive lights, but they serve different underwater missions. Choose the one that fits your diving style.\u003c\/p\u003e\n\u003cdiv class=\"speras-table-wrapper\"\u003e\n\u003ctable class=\"speras-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 30%;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"background: #0078D4 !important; color: #fff; width: 35%; font-size: 18px;\"\u003e🌊 BD42 (This Item)\u003c\/th\u003e\n\u003cth style=\"background: #475569 !important; color: #fff; width: 35%; font-size: 18px;\"\u003e\u003ca href=\"https:\/\/sperasflashlight.com\/products\/bludive-bd40-pro-3000lm-464m-dive-torch-150m-underwater-with-21700-battery\" target=\"_blank\" title=\"BLUDIVE BD40 PRO 3000LM 464M Dive Torch 150m Underwater With 21700 Battery\" rel=\"noopener\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 255, 255); text-decoration: underline;\"\u003eBD40 Pro\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-weight: bold; color: #555;\"\u003eBeam Angle Profile\u003c\/td\u003e\n\u003ctd class=\"speras-highlight-col\"\u003e4° Super Focused Spot\u003c\/td\u003e\n\u003ctd style=\"background: #f1f5f9;\"\u003e8° General Spot Beam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-weight: bold; color: #555;\"\u003eMax Brightness\u003c\/td\u003e\n\u003ctd class=\"speras-highlight-col\"\u003e2500 Lumens\u003c\/td\u003e\n\u003ctd style=\"background: #fff;\"\u003e3000+ Lumens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-weight: bold; color: #555;\"\u003eSwitch Type\u003c\/td\u003e\n\u003ctd class=\"speras-highlight-col\"\u003eStainless Steel Side Switch\u003c\/td\u003e\n\u003ctd style=\"background: #f1f5f9;\"\u003eMagnetic Rotary Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-weight: bold; color: #555;\"\u003ePrimary Advantage\u003c\/td\u003e\n\u003ctd class=\"speras-highlight-col\"\u003eCuts through murky water \u0026amp; reduces backscatter\u003c\/td\u003e\n\u003ctd style=\"background: #fff;\"\u003eBroader area illumination \u0026amp; simple rotation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"speras-section-title\"\u003eEngineered for the Depths\u003c\/h2\u003e\n\u003cdiv class=\"speras-feature-row\"\u003e\n\u003cdiv class=\"speras-feature-text\"\u003e\n\u003ch3 style=\"font-size: 22px; font-weight: bold; color: #0078d4; margin-top: 0;\"\u003e4° Focused Beam \u0026amp; 2500 Lumens\u003c\/h3\u003e\n\u003cp style=\"font-size: 16px; margin-bottom: 15px;\"\u003ePowered by the \u003cstrong\u003eLuminus SFT42R LED\u003c\/strong\u003e, the BD42 pushes out 2500 lumens. The precision SMD reflector, paired with an AR-coated 4mm tempered lens, provides a highly concentrated \u003cstrong\u003e4° narrow beam\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin-bottom: 0;\"\u003eThis intense focus translates to an incredible \u003cstrong\u003e618-meter throw\u003c\/strong\u003e, making it perfect for penetrating murky waters and signaling over long distances.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"speras-feature-img\"\u003e\u003cimg class=\"speras-zoom\" alt=\"Bludive BD42 4 degree narrow focused beam 2500 lumens underwater\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD42-2.jpg?v=1762834808\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"speras-feature-row\" style=\"flex-direction: row-reverse;\"\u003e\n\u003cdiv class=\"speras-feature-text\"\u003e\n\u003ch3 style=\"font-size: 22px; font-weight: bold; color: #0078d4; margin-top: 0;\"\u003eIntelligent Switch \u0026amp; Auto-Lock Safety\u003c\/h3\u003e\n\u003cp style=\"font-size: 16px; margin-bottom: 15px;\"\u003eThe desired mode is easily selected via the stainless steel side switch. The built-in power indicator displays accurate battery status (Green: 100%-30%, Red: 30%-5%) at all times.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin-bottom: 0;\"\u003eTo ensure ultimate safety, the flashlight features an \u003cstrong\u003eAutomatic Lock Function\u003c\/strong\u003e. If turned off for 3 minutes without operation, it locks automatically to prevent accidental activation in your dive bag.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"speras-feature-img\"\u003e\u003cimg class=\"speras-zoom\" alt=\"Bludive BD42 intelligent stainless steel side switch with auto-lock safety function\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD42-5.jpg?v=1762834819\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"speras-feature-row\"\u003e\n\u003cdiv class=\"speras-feature-text\"\u003e\n\u003ch3 style=\"font-size: 22px; font-weight: bold; color: #0078d4; margin-top: 0;\"\u003ePremium LG Cell \u0026amp; Extended Runtime\u003c\/h3\u003e\n\u003cp style=\"font-size: 16px; margin-bottom: 15px;\"\u003eEquipped with a high-capacity \u003cstrong\u003e21700 5000mAh Lithium battery (premium LG Cell)\u003c\/strong\u003e, the BD42 offers reliable runtimes: 1.9 hours on High mode and up to 7 hours on Low.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin-bottom: 0;\"\u003eThe intelligent circuit includes \u003cstrong\u003eMode Memory\u003c\/strong\u003e, reverse polarity protection, and an over-discharge downshifting function to prevent battery damage when power is low.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"speras-feature-img\"\u003e\u003cimg class=\"speras-zoom\" alt=\"Bludive BD42 powered by 21700 5000mAh premium LG battery cell for extended runtime\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD42-3.jpg?v=1762834813\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"speras-section-title\"\u003eDive Scenarios\u003c\/h2\u003e\n\u003cp style=\"text-align: center; color: #475569; margin-bottom: 30px; font-size: 16px;\"\u003eEngineered for extreme environments. See how the BD42 performs under the waves.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 30px; margin-bottom: 50px;\"\u003e\n\u003cdiv style=\"flex: 1 1 280px; background: #fff; padding: 25px; border-radius: 12px; border: 1px solid #e2e8f0; box-shadow: 0 4px 10px rgba(0,0,0,0.03); display: flex; flex-direction: column;\"\u003e\n\u003ch3 style=\"font-size: 20px; font-weight: bold; color: #0f172a; margin-top: 0; margin-bottom: 15px; text-align: center; line-height: 1.4;\"\u003e🌊 Deep Sea Exploration\u003c\/h3\u003e\n\u003cp style=\"font-size: 15px; color: #475569; text-align: center; margin-bottom: 25px; flex-grow: 1;\"\u003eBuilt tough with aircraft-grade aluminum. The true 150-meter water pressure resistance rating ensures it serves perfectly as a primary or backup light for deep technical dives.\u003c\/p\u003e\n\u003cimg style=\"width: 100%; height: auto; border-radius: 8px; display: block; margin-top: 20px;\" class=\"speras-zoom\" alt=\"Bludive BD42 150-meter waterproof deep sea exploration dive light depth scale\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD42-4.jpg?v=1762834816\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"speras-section-title\"\u003eTechnical Specifications \u0026amp; Box Contents\u003c\/h2\u003e\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 40px; margin-bottom: 50px;\"\u003e\n\u003cdiv style=\"background: #fafafa; padding: 30px; border-radius: 12px; border: 1px solid #e2e8f0; box-shadow: 0 4px 10px rgba(0,0,0,0.03);\"\u003e\n\u003ch3 style=\"font-size: 22px; font-weight: bold; color: #0f172a; margin-top: 0; margin-bottom: 20px; text-align: center;\"\u003eTechnical Specifications ⚙️\u003c\/h3\u003e\n\u003cimg style=\"width: 100%; max-width: 800px; border-radius: 8px; display: block; margin: 0 auto; box-shadow: 0 4px 15px rgba(0,0,0,0.05);\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD42-6.jpg?v=1762834821\" alt=\"Bludive BD42 technical specifications and dimensions chart\" class=\"speras-zoom\"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; padding: 30px; border-radius: 12px; border: 1px solid #e2e8f0; box-shadow: 0 4px 10px rgba(0,0,0,0.03);\"\u003e\n\u003ch3 style=\"font-size: 22px; font-weight: bold; color: #0f172a; margin-top: 0; margin-bottom: 20px; text-align: center;\"\u003eWhat's Inside the Box 📦\u003c\/h3\u003e\n\u003cul style=\"font-size: 16px; color: #475569; padding-left: 20px; line-height: 1.8; margin-bottom: 30px; font-weight: 500; columns: 2; -webkit-columns: 2; -moz-columns: 2; max-width: 600px; margin-left: auto; margin-right: auto;\"\u003e\n\u003cli\u003e1 × Bludive BD42 Torch\u003c\/li\u003e\n\u003cli\u003e1 × 5000mAh 21700 Battery\u003c\/li\u003e\n\u003cli\u003e1 × Battery Charger\u003c\/li\u003e\n\u003cli\u003e1 × Diving Lanyard\u003c\/li\u003e\n\u003cli\u003e3 × Spare O-rings\u003c\/li\u003e\n\u003cli\u003e1 × User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cimg style=\"width: 100%; max-width: 800px; border-radius: 8px; display: block; margin: 0 auto; box-shadow: 0 4px 15px rgba(0,0,0,0.05);\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD42-7.jpg?v=1762834825\" alt=\"Bludive BD42 dive light retail packaging and inside the box accessories\" class=\"speras-zoom\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; padding: 40px 20px; border: 2px solid #0078D4; border-radius: 12px; text-align: center; margin: 50px 0; box-shadow: 0 10px 25px rgba(0, 120, 212, 0.08);\"\u003e\n\u003ch2 style=\"font-size: 28px; color: #0f172a; margin-top: 0; margin-bottom: 15px; font-weight: 900;\"\u003eDive Deeper With Confidence\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; color: #475569; margin-bottom: 25px; max-width: 650px; margin-left: auto; margin-right: auto;\"\u003eDon't let murky waters ruin your dive. Equip yourself with the Bludive BD42 and cut through the darkness with a laser-like 4° beam and 2500 lumens of raw power.\u003c\/p\u003e\n\u003ca href=\"#top\" style=\"display: inline-block; background: #0078D4; color: #fff; padding: 16px 40px; border-radius: 8px; font-weight: 900; font-size: 18px; text-transform: uppercase; box-shadow: 0 6px 20px rgba(0, 120, 212, 0.35); text-decoration: none; transition: background 0.3s ease;\"\u003e🛒 SELECT OPTIONS \u0026amp; ADD TO CART\u003c\/a\u003e\n\u003cp style=\"font-size: 14px; color: #64748b; margin-top: 15px; font-weight: bold;\"\u003eSecure Checkout | Official Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"speras-section-title\"\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom: 40px;\"\u003e\n\u003cdetails style=\"background-color: #fff; padding: 18px 20px; margin-bottom: 15px; border: 1px solid #cbd5e1; border-radius: 8px; cursor: pointer;\" open=\"\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: bold; color: #0f172a; outline: none;\"\u003eWhy use a narrow beam underwater?\u003c\/summary\u003e\n\u003cp style=\"margin-top: 12px; font-size: 16px; color: #475569; line-height: 1.6;\"\u003eIn water with particles, wide beams can reflect light toward you (backscatter). The BD42's extremely tight 4° beam helps you focus on your target instead, piercing through murky environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"background-color: #fff; padding: 18px 20px; margin-bottom: 15px; border: 1px solid #cbd5e1; border-radius: 8px; cursor: pointer;\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: bold; color: #0f172a; outline: none;\"\u003eIs it suitable for deep diving?\u003c\/summary\u003e\n\u003cp style=\"margin-top: 12px; font-size: 16px; color: #475569; line-height: 1.6;\"\u003eYes, it’s highly rated to 150 meters (IPX-8) and can be used as a primary or reliable backup light for both recreational and deep technical diving.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"background-color: #fff; padding: 18px 20px; margin-bottom: 15px; border: 1px solid #cbd5e1; border-radius: 8px; cursor: pointer;\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: bold; color: #0f172a; outline: none;\"\u003eWill the switch work with gloves?\u003c\/summary\u003e\n\u003cp style=\"margin-top: 12px; font-size: 16px; color: #475569; line-height: 1.6;\"\u003eAbsolutely. The stainless steel side switch is designed to provide clear tactile feedback, ensuring easy operation even when wearing thicker dive gloves.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"background-color: #fff; padding: 18px 20px; margin-bottom: 15px; border: 1px solid #cbd5e1; border-radius: 8px; cursor: pointer;\"\u003e\n\u003csummary style=\"font-size: 18px; font-weight: bold; color: #0f172a; outline: none;\"\u003eHow should I maintain it?\u003c\/summary\u003e\n\u003cp style=\"margin-top: 12px; font-size: 16px; color: #475569; line-height: 1.6;\"\u003eAlways rinse the flashlight with fresh water after saltwater use, dry it thoroughly, and regularly check and lubricate the O-rings with silicone grease to maintain the watertight seal.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n    {\n      \"@context\": \"https:\/\/schema.org\",\n      \"@type\": \"FAQPage\",\n      \"mainEntity\": [{\n        \"@type\": \"Question\",\n        \"name\": \"Why use a narrow beam underwater?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"In water with particles, wide beams can reflect light toward you (backscatter). 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