



1200LM MAX & 7-DEGREE CONCENTRATED SPOT: Eliminates dangerous underwater backscatter glare caused by wide floodlights reflecting off algae and particles in murky water. Driven by an OSRAM P9 LED and a smooth SMO reflector to focus 1200 lumens into a laser-sharp 7-degree tight beam column, achieving a penetrating 265-meter throw with 17,600cd intensity.
150M CERTIFIED DEEP PRESSURE ARMOR: Built like a miniature vault to handle recreational primary diving or technical backup missions. CNC-machined from high-strength aerospace 6061 aluminum with an AR-coated 4mm tempered lens, utilizing heavy-duty multi-layered waterproof sealing rings to withstand extreme environments depth rated up to 150 meters underwater.
DUAL-FUEL VERSATILITY & DIRECT USB-C CELL: Shuts down the frustration of carrying bulky standalone docks onto a rocking boat. Powered by an included premium 18650 3400mAh battery that plugs directly into any Type-C cord for rapid refueling, while remaining fully compatible with 2* CR123A Lithium cells as an instant off-grid emergency power backup.
3-MIN AUTO-LOCKOUT & ANTI-SHORT FAILSAFE: Eliminates the danger of drained batteries or dive bag heat damage. Features an intelligent 3-minute Automatic Lockout function that secures the stainless steel side switch from accidental bumps, paired with electronic reverse polarity protection and an accurate built-in real-time battery lifespan tracker.
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Most flashlights can directly get 5 years warranty; battery and accessories get 1 year warranty.
Any questions, please email to info@sperasflashlight.com
1200LM OSRAM LED & 6000K COLOR: Utilizes a premium OSRAM LED reaching a maximum output of 1200 lumens. The 6000K color temperature provides superb color rendition, bringing true marine colors to life during your dive.
7-DEGREE CONCENTRATED SPOT BEAM: An SMO reflector paired with an AR-coated 4mm tempered lens creates a clear, concentrated 7-degree beam angle, cutting through murky water while minimizing backscatter.
DUAL POWER SOURCE & 3H40MIN RUNTIME: Compatible with both an 18650 3400mAh rechargeable lithium battery (included) and 2*CR123A batteries. Delivers up to 1H30mins on High mode and 3H40mins on Medium mode.
150M DEEP WATERPROOF & SAFE UI: Aircraft-grade aluminum body depth rated to 150 meters. Features a stainless steel side switch with a built-in power indicator, reverse polarity protection, and a 3-minute auto-lock to prevent accidental activation.
Different dives require different gear. Compare our top-tier scuba diving flashlights to find the perfect match for your underwater adventures.
| Features | 🔥 BLUDIVE BD20 (Compact) | BLUDIVE BD40 (Heavy-Duty) |
|---|---|---|
| Primary Advantage | Universal, Type-C direct charging battery | Massive output, extended runtime |
| Max Output & Beam | 1200 Lumens / 7° Concentrated Spot | 1800 Lumens / 6° Concentrated Beam |
| Beam Distance | 265 Meters | 351 Meters |
| Power Source | 18650 Battery (or 2*CR123A) | 21700 Battery (5000mAh) |
| Ideal Use Case | Recreational Primary / Tech Backup | Deep Sea Primary / Extended Exploration |
The OSRAM LED's 6000K color temperature brings true marine colors to life, making it a fantastic underwater flashlight for observation.
Paired with the SMO reflector, it emits a clear, highly concentrated 7-degree beam, minimizing backscatter in murky conditions to deliver an impressive 265-meter beam distance.
Change modes effortlessly underwater with the handy stainless steel side switch. The built-in LED indicator provides accurate real-time battery status (Green/Red) for your dive torch.
It also features an Automatic Lock function after 3 minutes in the OFF state to prevent accidental triggering and battery drain.
Flexibility is vital. The BD20 waterproof dive flashlight is powered by an included 3400mAh 18650 lithium battery equipped with a convenient direct Type-C charging port.
In emergencies or freezing waters, it's fully compatible with 2*CR123A batteries. It is also safely designed with reverse polarity protection against improper installation.
Don't let murky waters or unreliable gear ruin your dive. Equip yourself with the highly qualified BD20 waterproof dive torch, delivering up to 3H40mins of dependable light.
🛒 SELECT OPTIONS & ADD TO CARTType-C Battery Included | 150m Waterproof | Fast Secure Shipping
A 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". The concentrated beam of the BLUDIVE BD20 penetrates straight through, giving you excellent distance visibility up to 265 meters, making it perfect for pointing out marine life with your underwater flashlight.
Absolutely. For recreational night diving or reef exploration, the 1200 lumens output of the BLUDIVE BD20 is more than sufficient. Because of its highly 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 dive torch for technical/cave divers.
After every dive, you must rinse your BLUDIVE BD20 scuba diving 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.
When you are gearing up on a rocking boat in low light, it's easy to accidentally insert a battery upside down. The BLUDIVE BD20 features Reverse Polarity Protection, an electronic failsafe that prevents a short circuit and protects the waterproof dive light's internal circuitry if the 18650 or CR123A batteries are installed incorrectly.
The BLUDIVE BD20 features a dual power source design. It comes with a 3400mAh 18650 rechargeable lithium battery featuring a direct USB-C charging port. Additionally, in emergencies or cold water conditions, this scuba dive light is fully compatible with two CR123A primary batteries.
The BLUDIVE BD20 is engineered from aircraft-grade high-strength aluminum and is professionally sealed to achieve an extreme water pressure resistance rating of 150 meters (492 feet). This makes it an incredibly durable waterproof dive flashlight for all levels of diving.
| Model | BLUDIVE BD20 |
|---|---|
| Light Source | OSRAM P9 |
| Max Output | 1200 lumens |
| Max Beam distance | 265 meters |
| Max Intensity | 17,600cd |
| Max running time | 3h40mins(at the medium with 18650 3400mah battery) |
| Modes | high-medium-strobe |
| Switch | Stainless Steel Side Switch |
| Compatible Battery | 1 pce 18650 Lithium battery/CR123A*2 |
| Charging Type | change battery or battery USB-C charging |
| Water Resitance | IPX-8(150 meters underwater) |
| Impact Restance | 1.5 meters |
| Dimensions | 140(Length)*37(Head)*25(Tube)mm |
| Weight | 4.65oz/132g (exclude battery) |
| 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/ 3400mAh battery under laboratory conditions. |
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| SPERAS BD20.pdf | Download |







