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Free shipping on all order above $49.99 to most countries.
Most flashlights can directly get 5 years warranty; battery and accessories get 1 year warranty.
Any questions, please email to info@sperasflashlight.com
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Both the BD30 and BD40 are built for the abyss, but they serve entirely different underwater missions. Review the authentic performance data below to choose the gear that matches your diving style.
| Metric | 🌊 BLUDIVE BD30 (This Item) | BLUDIVE BD40 |
|---|---|---|
| Beam Profile | 134° Ultra-Wide Flood Beam | 6° Concentrated Spot Beam |
| Max Output | 3000 Lumens (White) + UV Light | 1800 Lumens |
| Max Throw Distance | 82 Meters | 351 Meters |
| LED Configuration | 3x SST40 White + 3x SST10 UV | 1x Luminus SST40 |
| Primary Advantage | Incredible Field of View & Color Rendering | Superior Piercing Power in Murky Water |
| Best Used For | Underwater Photography, Video & Fluorescence | Cave Exploration, Deep Search, Long-Range Signaling |
Powered by a customized 5000mAh 21700 bipolar lithium battery, ensuring safe, high-drain performance. The built-in LED indicator provides accurate, real-time battery status (Green, Red, Red Flash) so you are never caught off guard during a dive.
No need to carry bulky specialized chargers. The bipolar battery itself features a direct USB-C fast-charging port, allowing you to easily power up from a laptop, power bank, or standard wall adapter.

| Model | BLUDIVE BD30 |
| Light Source | SST40*3 + SST10 UV*3 |
| Max Output | 3000 lumens (white light) |
| Light Angle | Floodlight (134°) |
| Max Beam distance | 82 meters |
| Max Intensity | 1684cd |
| Max Running Time | 4H30min (white light) |
| Max Running Time | 8H (UV light) |
| White Light Mode | High-Medium-Low-Strobe |
| UV Light Mode | High-Medium-Low |
| Switch | Electronic + Rotary |
| Battery | 21700 Lithium |
| Charging | USB-C |
| Water Resistance | IP68 (150m) |
| Impact Resistance | 1.5m |
| Material | 6061 Aluminum |
| Application | Diving / Underwater / UV / Outdoor |


Secure Checkout | SPERAS Official Warranty
Yes, it is rated for underwater use up to 150 meters.
It helps reveal fluorescence in marine life and underwater environments.
Yes, the included battery supports USB-C charging.
Yes, the wide 134° flood beam provides perfectly even lighting for video and photography.








