Featuring 1600 lumens, the compact Sea Dragon Mini 1600 dive light offers users tremendous brightness and a narrow long-range beam. All light functions are easily accessible with one handed operation to cycle through five light modes. The Kit includes an 18650 3500mAh battery and USB battery charger. The Mini 1600 light is constructed of an Anodized aluminum body for maximum durability and corrosion resistance. The dual O-ring design ensures reliable waterproof seal down to depths of 100m◊ Powerful 1600 lumen LED dive light using a Luminus SFT-40 LED ◊ 6° ultra-narrow spot beam (4.5° underwater) for long range viewing and pointing out sea life ◊ One button operation: Long push (1 sec) to power on/off; Short push to cycle through 5 light modes ◊ Five light modes: Full power 1600 lumen, Half power 800 lumen, Quarter power 400 lumen, Blinking (once per second at full power), SOS (blinking signal at full power) ◊ Can be used with 3500mAh (and higher) 18650 Li-Ion rechargeable delivering one hour of run time at full power, 2 hours of run time at half power, 4 hours at quarter power (with 3500mAh battery) ◊ Colored Battery indicator. Green = full, yellow = medium and red = low battery strength. ◊ Safety pressure release valve relieves internal pressure built-up caused by damaged battery. ◊ Depth tested to 100m