{"product_id":"bludive-bd20-dive-light-scuba-diving-flashlight-underwater-torch","title":"BLUDIVE BD20 18650 1200lm Side Button Receational Dive Flashlight","description":"\u003cstyle\u003e\n    \/* 基础样式重置与排版优化 (深海潜水主题配色 - 标准详情页版型) *\/\n    .bd20-pdp-container { font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif; color: #333; line-height: 1.6; max-width: 1200px; margin: 0 auto; padding: 20px; }\n    .bd20-pdp-container h2 { font-size: 28px; color: #0f172a; margin-top: 40px; margin-bottom: 20px; border-left: 5px solid #06b6d4; padding-left: 15px; font-weight: 800; text-transform: uppercase;}\n    .bd20-pdp-container h3 { font-size: 20px; color: #0f172a; margin-bottom: 10px; font-weight: 700; }\n    .bd20-pdp-container p { font-size: 16px; margin-bottom: 15px; color: #475569; }\n    .bd20-pdp-container ul { margin-bottom: 20px; padding-left: 20px; }\n    .bd20-pdp-container li { font-size: 16px; margin-bottom: 8px; color: #475569;}\n    \n    \/* 🏆 英雄区域 (Hero Section) *\/\n    .bd20-hero-banner { background: linear-gradient(135deg, #0f172a 0%, #0284c7 100%); 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}\n    @media (min-width: 768px) { .bd20-overview-box ul { columns: 2; } }\n    .bd20-overview-box li { margin-bottom: 12px; color: #1e293b; font-weight: 500; }\n    \n    \/* 响应式网格布局 *\/\n    .bd20-grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; align-items: center; margin-bottom: 40px; }\n    \n    \/* 图片自适应及防裁切约束 *\/\n    .bd20-img-responsive { width: 100%; height: auto; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.08); display: block; cursor: zoom-in; transition: transform 0.2s; }\n    .bd20-img-responsive:hover { transform: scale(1.02); }\n    .img-contain { aspect-ratio: auto; object-fit: contain; background: #0f172a; }\n    \n    \/* Feature Blocks 优化 *\/\n    .feature-block { background: #ffffff; border-radius: 12px; overflow: hidden; border: 1px solid #e2e8f0; margin-bottom: 30px; }\n    .feature-text { padding: 30px; }\n    \n    \/* 🏆 对比表格 (中立导向) *\/\n    .bd20-table-wrapper { overflow-x: auto; margin: 40px 0; border-radius: 16px; 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margin-bottom: 0; color: #475569; padding-top: 15px; border-top: 1px solid #e2e8f0; }\n    \n    \/* Box 模块深色背景及文字颜色 *\/\n    .bd20-box-module { background: #0f172a; padding: 40px; border-radius: 16px; margin-top: 40px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); }\n    .bd20-box-module h2 { border-left-color: #06b6d4; color: #ffffff !important; margin-top: 0; }\n    \n    \/* CTA 模块 *\/\n    .bd20-cta-module { background: #ffffff; padding: 48px 28px; border: 2px solid #06b6d4; border-radius: 36px; text-align: center; margin: 56px 0; box-shadow: 0 18px 32px rgba(6, 182, 212, 0.1); }\n    .cta-button { display: inline-block; background: #0284c7; color: #fff; padding: 16px 45px; border-radius: 40px; font-weight: 800; font-size: 18px; text-decoration: none; transition: 0.2s; box-shadow: 0 6px 15px rgba(2, 132, 199, 0.3); }\n    .cta-button:hover { background: #0369a1; transform: translateY(-2px); }\n\n    \/* 放大灯箱样式 *\/\n    #speras-lightbox { position: fixed; z-index: 999999; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(15, 23, 42, 0.95); display: flex; justify-content: center; align-items: center; opacity: 0; visibility: hidden; transition: opacity 0.3s ease; cursor: zoom-out; }\n    #speras-lightbox.active { opacity: 1; visibility: visible; }\n    #speras-lightbox img { max-width: 90vw; max-height: 90vh; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,0.5); transform: scale(0.9); transition: transform 0.3s ease; }\n    #speras-lightbox.active img { transform: scale(1); }\n\n    \/* 📱 手机端防文字重叠与排版优化 *\/\n    @media (max-width: 767px) {\n        .bd20-pdp-container { padding: 15px; }\n        .bd20-hero-banner { padding: 30px 20px; }\n        .bd20-hero-banner h1 { font-size: 28px; }\n        .bd20-hero-banner .subtitle { font-size: 15px; }\n        .bd20-overview-box { padding: 25px 20px; }\n        .bd20-overview-box h2 { font-size: 20px; }\n        .bd20-cta-module { padding: 35px 20px; }\n        .bd20-cta-module h2 { font-size: 24px; }\n        .feature-text { padding: 20px; }\n        .bd20-box-module { padding: 25px 20px; }\n        .bd20-pdp-container h2 { font-size: 22px; }\n        \/* 强制单词换行，防止长链接或长单词撑破屏幕导致重叠 *\/\n        .bd20-pdp-container p, \n        .bd20-pdp-container li, \n        .bd20-pdp-container a { \n            word-wrap: break-word; \n            overflow-wrap: break-word; \n        }\n    }\n\u003c\/style\u003e\n\n\u003cdiv class=\"bd20-pdp-container\"\u003e\n    \u003cdiv class=\"bd20-hero-banner\"\u003e\n        \u003cspan style=\"display: inline-block; background: #06b6d4; color: #fff; padding: 6px 18px; border-radius: 30px; font-size: 14px; font-weight: 800; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 20px;\"\u003eUniversal Dive Light\u003c\/span\u003e\n        \u003ch1\u003eBLUDIVE BD20: 1200lm Scuba Diving Torch\u003c\/h1\u003e\n        \u003cp class=\"subtitle\"\u003eEngineered for the abyss. Delivering a focused \u003cspan style=\"color: #38bdf8;\"\u003e\u003cstrong\u003e1200-lumen output\u003c\/strong\u003e\u003c\/span\u003e and an incredible \u003cspan style=\"color: #38bdf8;\"\u003e\u003cstrong\u003e150-meter waterproof rating\u003c\/strong\u003e\u003c\/span\u003e, it cuts through murky waters. The BD20 stands out as the perfect primary light for recreational divers and a highly reliable backup light for technical divers.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin-bottom: 40px;\"\u003e\u003cimg class=\"bd20-img-responsive speras-zoom img-contain\" alt=\"Bludive BD20 1200 lumen 150m underwater dive flashlight in action\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD20-1.jpg?v=1702046944\"\u003e\u003c\/div\u003e\n    \u003cdiv class=\"bd20-overview-box\"\u003e\n        \u003ch2\u003eOverview \u0026amp; Core Features\u003c\/h2\u003e\n        \u003cp\u003e\u003cstrong\u003eBludive BD20\u003c\/strong\u003e is a universal dive light. It utilizes the 1*OSRAM led, its max output can reach \u003cstrong\u003e1200 lumens\u003c\/strong\u003e, meanwhile the \u003cstrong\u003e6000K LED color temperature\u003c\/strong\u003e provides superb color rendition. SMO reflector emits a very concentrated beam at \u003cstrong\u003e7 degrees\u003c\/strong\u003e. There are 3 brightness settings, high-medium-Strobe, users can change the brightness by pressing the stainless steel side switch. Powered by 1*18650 Lithium battery, its max runtime can reach \u003cstrong\u003e3H40mins\u003c\/strong\u003e.\u003c\/p\u003e\n        \u003cul\u003e\n            \u003cli\u003e✨ Utilized 1*OSRAM led, Max 1200lm Output.\u003c\/li\u003e\n            \u003cli\u003e🎯 SMO reflector and AR coated 4mm tempered lens, offer a clear concentrated beam at 7 degrees.\u003c\/li\u003e\n            \u003cli\u003e🔘 Handy Stainless Steel side switch with built-in indicator, change the modes underwater easily and access to the remaining power easily.\u003c\/li\u003e\n            \u003cli\u003e🤿 3 brightness settings, qualified as a primary light for recreational divers or as a backup light for technical divers.\u003c\/li\u003e\n            \u003cli\u003e🔋 Compatible with \u003cstrong\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca rel=\"noopener\" style=\"color: rgb(43, 0, 255);\" title=\"SPERAS R34 18650 3400mAh Rechargeable Battery\" href=\"https:\/\/sperasflashlight.com\/products\/speras-r34-18650-3400mah-rechargeable-battery\" target=\"_blank\"\u003e1*18650 3400mAh\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e and 2*CR123A Lithium battery, provide \u003cstrong\u003ehigh mode with 1H30mins, Medium mode 3H40mins\u003c\/strong\u003e.\u003c\/li\u003e\n            \u003cli\u003e⚡ Dual power source, suits for different battery preference.\u003c\/li\u003e\n            \u003cli\u003e🌊 Water pressure resistant construction, \u003cstrong\u003edepth rated to 150meters\u003c\/strong\u003e.\u003c\/li\u003e\n            \u003cli\u003e🛡️ Aircraft-grade high strength aluminum material.\u003c\/li\u003e\n            \u003cli\u003e🔌 Reverse polarity protection, to protect from improper battery installation.\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/div\u003e\n    \u003ch2\u003eEngineered for the Abyss\u003c\/h2\u003e\n    \u003cdiv class=\"bd20-grid-2 feature-block\"\u003e\n        \u003cdiv style=\"order: 2;\"\u003e\u003cimg class=\"bd20-img-responsive speras-zoom img-contain\" alt=\"Bludive BD20 scuba dive light features and 265m beam distance\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD20-2.jpg?v=1702046960\"\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-text\" style=\"order: 1;\"\u003e\n            \u003ch3 style=\"color: #0284c7;\"\u003eSuperb Color Rendition \u0026amp; 7° Spot\u003c\/h3\u003e\n            \u003cp\u003eThe \u003cstrong\u003eOSRAM LED's 6000K\u003c\/strong\u003e color temperature brings true marine colors to life. Paired with the SMO reflector, it emits a clear, highly concentrated 7-degree beam, minimizing backscatter in murky conditions to deliver a\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e 265-meter\u003c\/span\u003e\u003c\/strong\u003e beam distance.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"bd20-grid-2 feature-block\"\u003e\n        \u003cdiv\u003e\u003cimg class=\"bd20-img-responsive speras-zoom img-contain\" alt=\"Bludive BD20 underwater torch battery indicator and lock function\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD20-5.jpg?v=1702047005\"\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-text\"\u003e\n            \u003ch3 style=\"color: #0284c7;\"\u003eIntuitive UI \u0026amp; Battery Indication\u003c\/h3\u003e\n            \u003cp\u003eChange modes effortlessly underwater with the handy stainless steel side switch. The built-in LED indicator provides accurate real-time battery status (Green\/Red). It also features an Automatic Lock function after 3 minutes in the OFF state to prevent accidental triggering.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"bd20-grid-2 feature-block\"\u003e\n        \u003cdiv style=\"order: 2;\"\u003e\u003cimg class=\"bd20-img-responsive speras-zoom img-contain\" alt=\"Bludive BD20 dive flashlight battery compatibility 18650 Type-C and CR123A\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD20-4.jpg?v=1702046991\"\u003e\u003c\/div\u003e\n        \u003cdiv class=\"feature-text\" style=\"order: 1;\"\u003e\n            \u003ch3 style=\"color: #0284c7;\"\u003eDual Power Source \u0026amp; USB-C\u003c\/h3\u003e\n            \u003cp\u003eFlexibility is vital. The BD20 is powered by an included 3400mAh 18650 lithium battery equipped with a direct Type-C charging port. In emergencies, it's fully compatible with 2*CR123A batteries. Safely designed with reverse polarity protection against improper installation.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003ch2\u003eBludive BD20 vs. BD40: Choosing Your Dive Light\u003c\/h2\u003e\n    \u003cp style=\"margin-bottom: 25px; font-size: 16px;\"\u003eDifferent dives require different gear. Compare our top-tier scuba diving flashlights to find the perfect match for your underwater adventures.\u003c\/p\u003e\n    \u003cdiv class=\"bd20-table-wrapper\"\u003e\n        \u003ctable class=\"bd20-table\"\u003e\n            \u003cthead\u003e\n                \u003ctr\u003e\n                    \u003cth\u003eFeatures\u003c\/th\u003e\n                    \u003cth style=\"background-color: #06b6d4; color: #fff; font-size: 18px;\"\u003eBLUDIVE BD20 (Compact)\u003c\/th\u003e\n                    \u003cth style=\"background-color: #0f172a; color: #fff; font-size: 18px;\"\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003e\u003ca rel=\"noopener\" style=\"color: rgb(255, 255, 255);\" title=\"BLUDIVE BD40 | 1800lm 351M High 150m Underwater Performance Dive Torch\" href=\"https:\/\/sperasflashlight.com\/products\/bludive-bd40-1800lm-351m-dive-torch-150m-underwater-with-21700-battery\" target=\"_blank\"\u003eBLUDIVE BD40 (Heavy-Duty)\u003c\/a\u003e\u003c\/span\u003e\u003c\/th\u003e\n                \u003c\/tr\u003e\n            \u003c\/thead\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\u003cstrong\u003ePrimary Advantage\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd class=\"bd20-highlight-1\"\u003eUniversal, Type-C direct charging\u003c\/td\u003e\n                    \u003ctd class=\"bd20-highlight-2\"\u003eMassive output, extended runtime\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\u003cstrong\u003eMax Output \u0026amp; Beam\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd\u003e1200 Lumens \/ 7° Concentrated Spot\u003c\/td\u003e\n                    \u003ctd\u003e1800 Lumens \/ 6° Concentrated Beam\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\u003cstrong\u003eBeam Distance\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd class=\"bd20-highlight-1\"\u003e265 Meters\u003c\/td\u003e\n                    \u003ctd\u003e351 Meters\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\u003cstrong\u003ePower Source\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd\u003e18650 Battery (or 2*CR123A)\u003c\/td\u003e\n                    \u003ctd\u003e21700 Battery (5000mAh)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003e\u003cstrong\u003eIdeal Use Case\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd class=\"bd20-highlight-1\"\u003eRecreational Primary \/ Tech Backup\u003c\/td\u003e\n                    \u003ctd class=\"bd20-highlight-2\"\u003eDeep Sea Primary \/ Extended Exploration\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"bd20-box-module bd20-grid-2\"\u003e\n        \u003cdiv\u003e\n            \u003ch2\u003eInside the Box \u0026amp; Specifications\u003c\/h2\u003e\n            \u003cp style=\"color: #cbd5e1 !important; font-size: 16px; margin-bottom: 20px;\"\u003eConstructed from aircraft-grade high strength aluminum, depth rated to 150m.\u003c\/p\u003e\n            \u003cul style=\"list-style-type: square; color: #ffffff !important; padding-left: 20px;\"\u003e\n                \u003cli style=\"color: #ffffff !important;\"\u003e1 * BLUDIVE BD20 Dive Torch\u003c\/li\u003e\n                \u003cli style=\"color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: rgb(255, 255, 255); text-decoration: underline;\"\u003e\u003ca rel=\"noopener\" title=\"SPERAS R34 18650 3400mAh Rechargeable Battery\" href=\"https:\/\/sperasflashlight.com\/products\/speras-r34-18650-3400mah-rechargeable-battery\" style=\"color: rgb(255, 255, 255); text-decoration: underline;\" target=\"_blank\"\u003e\u003cstrong\u003e1 * 18650 USB-C Rechargeable Battery (3400mAh)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n                \u003cli style=\"color: #ffffff !important;\"\u003e1 * Professional Diving Lanyard\u003c\/li\u003e\n                \u003cli style=\"color: #ffffff !important;\"\u003e3 * Spare O-rings\u003c\/li\u003e\n                \u003cli style=\"color: #ffffff !important;\"\u003e1 * User Manual\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display: flex; flex-direction: column; gap: 20px;\"\u003e\n            \u003cimg class=\"bd20-img-responsive speras-zoom img-contain\" alt=\"Bludive BD20 scuba diving flashlight specifications and dimensions\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD20-3.jpg?v=1702046975\"\u003e \u003cimg class=\"bd20-img-responsive speras-zoom img-contain\" alt=\"Bludive BD20 dive light package contents\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0605\/4549\/9313\/files\/BD20-6.jpg?v=1702047023\"\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"bd20-cta-module\"\u003e\n        \u003ch2 style=\"font-size: 30px; color: #0f172a; margin-bottom: 12px; font-weight: 900;\"\u003eIlluminate Your Underwater World\u003c\/h2\u003e\n        \u003cp style=\"font-size: 17px; color: #475569; margin-bottom: 28px; max-width: 650px; margin-left: auto; margin-right: auto;\"\u003eDon't let murky waters or unreliable gear ruin your dive. Equip yourself with the highly qualified BD20, delivering up to 3H40mins of dependable light.\u003c\/p\u003e\n        \u003cdiv style=\"display: flex; flex-wrap: wrap; justify-content: center; gap: 24px; margin-bottom: 32px; font-size: 15px; color: #0284c7; font-weight: bold;\"\u003e\n            \u003cspan\u003e✅ Type-C Battery Included\u003c\/span\u003e \u003cspan\u003e✅ 150m Waterproof\u003c\/span\u003e \u003cspan\u003e✅ Fast Secure Shipping\u003c\/span\u003e\n        \u003c\/div\u003e\n        \u003ca href=\"#MainContent\" class=\"cta-button\"\u003eAdd to Cart Now 🛒\u003c\/a\u003e\n    \u003c\/div\u003e\n    \u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n    \u003cdiv class=\"bd20-faq\"\u003e\n        \u003cdetails open=\"\"\u003e\n            \u003csummary\u003eWhy is a 7-degree beam angle important for a dive flashlight?\u003c\/summary\u003e\n            \u003cp\u003eA tight 7-degree beam is essential for cutting through water that has high particulate matter (sediment, algae). A wide beam will reflect off these particles, creating a blinding \"backscatter\". A tight beam penetrates straight through, giving you excellent distance visibility and making it perfect for pointing out marine life.\u003c\/p\u003e\n        \u003c\/details\u003e\n        \u003cdetails\u003e\n            \u003csummary\u003eCan I use the Bludive BD20 as a primary dive light?\u003c\/summary\u003e\n            \u003cp\u003eAbsolutely. For recreational night diving or reef exploration, 1200 lumens is more than sufficient. Because of its reliable build, 150m waterproof rating, and up to 3 hours 40 minutes of runtime on medium, it is widely used as a primary light for recreational divers, and as a highly trusted backup light for technical\/cave divers.\u003c\/p\u003e\n        \u003c\/details\u003e\n        \u003cdetails\u003e\n            \u003csummary\u003eHow should I maintain the O-rings on my underwater torch?\u003c\/summary\u003e\n            \u003cp\u003eAfter every dive, you must rinse your flashlight in fresh water to remove salt crystals. Before your next dive trip, inspect the O-rings (the BD20 includes 3 spare O-rings). If they look dry, apply a very light coating of silicone grease to maintain the 150-meter waterproof seal. Do not over-grease, as this can attract sand.\u003c\/p\u003e\n        \u003c\/details\u003e\n        \u003cdetails\u003e\n            \u003csummary\u003eWhat does Reverse Polarity Protection mean?\u003c\/summary\u003e\n            \u003cp\u003eWhen you are gearing up on a rocking boat in low light, it's easy to accidentally insert a battery upside down. 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