BLUDIVE BD40 1800lm 150m Waterproof Scuba Dive Flashlight
- $136.89
- $136.89
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1800LM BALANCED OUTPUT & 351M CLEAR BEAM: Equipped with a reliable Luminus SST40 LED, this primary dive flashlight delivers a powerful 1800 lumens max output. The crystal clear 6-degree concentrated beam effortlessly cuts through murky waters, reaching up to 351 meters to illuminate reefs and marine life without excessive backscatter glare.
150M EXTREME DEPTH WATERPROOF RATING: Constructed from high-strength aerospace-grade aluminum, this waterproof dive torch is built to withstand crushing deep-sea pressure. Certified with an IPX-8 150-meter submersible rating, it ensures absolute reliability for recreational scuba diving or as a dependable technical backup.
7-HOUR EXTENDED RUNTIME & SMART PROTECTION: Powered by a high-capacity 21700 5000mAh lithium battery, it provides an impressive 7 hours of continuous illumination on Low mode. Features built-in reverse polarity protection and an automatic discharge downshift function to guarantee safe ascents when the battery runs low.
INTUITIVE MEMORY UI & 3-MIN AUTO-LOCKOUT: The anti-corrosion stainless steel switch instantly remembers your last used brightness mode. To prevent accidental battery drain in your gear bag, the scuba dive light features a smart 3-minute automatic lockout function, alongside a real-time LED power indicator for absolute peace of mind.
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Warranty
Most flashlights can directly get 5 years warranty; battery and accessories get 1 year warranty.
Note
Any questions, please email to info@sperasflashlight.com
Compare: BD40 vs. BD40 PRO Waterproof Dive Torches
Both the BD40 and BD40 PRO are professional-grade waterproof dive torches. Choose the model that best matches your underwater exploration style and power requirements.
| Features | 🔥 BLUDIVE BD40 (This Item) | BLUDIVE BD40 PRO |
|---|---|---|
| Best Suited For | Recreational Diving & Reliable Backup | Technical Diving, Primary Light & Spearfishing |
| Max Output | 1800 Lumens (Balanced) | 3000 Lumens (Extreme Brightness) |
| Max Runtime (Low Mode) | 7 Hours (Excellent Endurance) | 4.4 Hours |
| Beam Distance | 351 Meters (6° Beam) | 464 Meters (6.3° Beam) |
| LED Model | Luminus SST40 | Luminus SFT70 |
| Waterproof Rating | 150 Meters | 150 Meters |
Professional Scuba Dive Light Features: 1800 Lumens Underwater
1800lm High Lumen Dive Torch with Smart Memory Function
Utilizes a premium Luminus SST40 LED to deliver a highly balanced maximum of 1800lm, perfect for penetrating dark oceanic environments.
This dive flashlight features an intuitive Memory Function: there is no need to cycle through modes every time you descend. The mode active when powered off will be memorized and instantly ready when you turn the torch back on underwater (excluding Strobe).
6-Degree Concentrated Beam for Murky Underwater Navigation
Whether you are exploring a shipwreck or cave diving, visibility is key. The BD40 scuba dive light uses an SMO reflector paired with an AR-coated 4mm tempered lens to provide a perfectly clear, concentrated beam at 6 degrees.
This tightly focused optical design effortlessly pierces through murky waters and minimizes backscatter, illuminating reefs and marine life up to 351 meters away without blinding your dive buddies.
Rechargeable Dive Flashlight with 7-Hour Extended Runtime
Powered by a single high-drain 21700 5000mAh Lithium battery, this underwater flashlight provides an extended runtime of 1H54mins in High mode and up to 7 Hours in Low mode, perfect for multiple dives in a single day.
It includes Reverse Polarity Protection against incorrect battery installation, and an automatic Discharge Protection function that downshifts the light when power is low to safely guide you to the surface.
150m Waterproof Dive Torch Built for Extreme Depths
Constructed from aircraft-grade high-strength aluminum material with an anti-abrasive finish, the body of the BD40 waterproof dive torch is built to withstand crushing oceanic depths.
With a certified water pressure resistant rating of 150 meters (492 ft), its compact size makes it less bulky, easy to store in a BCD pocket, and extremely nimble to handle as a primary or secondary backup underwater light.
Anti-Corrosion Switch & Reliable Battery Indicator for Scuba Diving
The desired mode (High-Low-Strobe) is easily selected via the anti-corrosion stainless steel side switch. A built-in LED power indicator makes it easy to accurately determine your remaining battery status even in the darkest trenches.
It also features an Automatic Lock Function after 3 minutes of inactivity to avoid false triggers and accidental battery drain in your dive gear bag.
BD40 Scuba Dive Flashlight Specs & Complete Kit
BD40 Specs ⚙️
- Max Output: 1800 Lumens
- Max Throw: 351 Meters (6° Spot)
- Battery: 21700 5000mAh Li-ion
- Waterproof: 150 Meters Submersible
- Safety: 3-Min Auto-Lock UI
- Application: Scuba Diving / Dive Flashlight
📦 Inside the Box
Your complete kit, ready for the next dive:
- 1 × BLUDIVE BD40 Dive Torch
- 1 × 21700 5000mAh Lithium Battery
- 1 × Battery Charger (ZL11)
- 1 × Professional Diving Lanyard
- 3 × Spare O-rings (Crucial)
- 1 × User Manual
Equip the Ultimate 150m Waterproof Scuba Dive Flashlight
Whether you are exploring coral reefs or need a dependable backup dive flashlight for deep descents, the 1800lm BD40 offers the perfect balance of brightness and an extended 7-hour runtime.
🛒 SELECT OPTIONS & ADD TO CART5000mAh Battery & Charger Included | 150m Waterproof | Fast Secure Shipping
Frequently Asked Questions (FAQ)
Is the BLUDIVE BD40 dive flashlight best used as a primary or backup underwater light?
The BLUDIVE BD40 is highly versatile. With its powerful 1800 lumens and 6-degree concentrated beam, it serves perfectly as a primary light for recreational scuba diving. Because of its compact size and robust 150m waterproof construction, many technical divers also use it as a highly dependable backup underwater flashlight for deep diving.
How does the smart memory function work on the BLUDIVE BD40 scuba dive light?
The memory function ensures that whatever brightness mode (High or Low) you were using before turning the BLUDIVE BD40 off will be saved. When you turn the dive torch back on, it instantly returns to that exact mode, saving you from cycling through the menu underwater (Note: Strobe mode is not memorized for safety reasons).
How do I know when the battery is running low on the BLUDIVE BD40 waterproof dive torch while underwater?
The stainless steel side switch of the BLUDIVE BD40 features a built-in LED power indicator. It displays Green for ample power, Red for low power, and Flashes Red when critically low. Additionally, the built-in discharge protection will automatically downshift the brightness of your underwater dive light to extend runtime when the battery is nearly depleted, ensuring you are never left in sudden darkness.
Can the BLUDIVE BD40 underwater flashlight withstand deep sea pressure?
Yes, absolutely. The BLUDIVE BD40 is engineered from aircraft-grade high-strength aluminum and is professionally sealed to achieve a water pressure resistance rating of 150 meters (492 feet). This extreme depth rating makes it a reliable waterproof dive torch for both shallow reef exploration and deep technical wreck diving.
What type of battery does the BLUDIVE BD40 dive torch use, and how long does it last?
The BLUDIVE BD40 scuba diving flashlight is powered by a single high-capacity 21700 5000mAh Lithium-ion battery (included). This high-drain power source provides an extended runtime of 1 hour and 54 minutes on High mode (1800 lumens) and up to 7 hours on Low mode, ensuring you have reliable illumination throughout your entire dive.
How do I prevent the BLUDIVE BD40 dive flashlight from accidentally turning on in my gear bag?
To prevent accidental battery drain, the BLUDIVE BD40 features a smart Automatic Lock Function. If the underwater flashlight is turned off and left on standby for 3 minutes, it automatically locks the stainless steel side switch. To unlock your dive light, simply long-press the side switch for 2 seconds before entering the water.
| Model | BLUDIVE BD40 |
|---|---|
| Light Source | Luminus SST40 |
| Max Output | 1800 lumens |
| Max Beam distance | 351 meters |
| Max Intensity | 30,750cd |
| Max running time | 1H54mins for High mode |
| Modes | high-low-strobe |
| Switch | Stainless Steel Side Switch |
| Compatible Battery | 1 pce 21700 Li-ion Lithium |
| Charging Type | change battery or battery USB-C charging |
| Water Resitance | IPX-8(150 meters underwater) |
| Impact Restance | 1.5 meters |
| Dimensions | 149.5(Length)*37(Head)*27(Tube)mm |
| Weight | 5.07oz/144g(battery excluded) |
| Body Material | Aerospace 6061 Aluminium |
| Application | Diving,Underwatert,Outdoor,Camping, Hiking, Everyday Carry |
| Note: The above data has been measured in accordance with international flashlight testing standards ANSI/NEMA FL1 using BLUDIVE 3.7V/ 5000mAh battery under laboratory conditions. |
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SPERAS BD40.pdf | Download |
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