3 Gears, DB18 18xT6, Luminous Flux: 5400lm LED Flashlight, with 4 18650 Batteries (Red Black) 1. Working gear: strong light-weak light-long press the switch to enter the flash, 3 gears 2. Product size: 143x64x51mm 3. Applicable battery: 18650x4 4. Waterproof rating: IPX4 (lifestyle, do not soak in water) 5. Charging method: USB direct charge 6. Lumens: 5400 lumens (actually 2500LM) 7. Product power: 54W 8. Working voltage: 3.7-5V 9. Product material: aluminum alloy 10. Product color: black + red 11. Whether to focus: no focus, lamp cup type 12. Switch position: middle button switch 13. Power display: the green light has power, the red light is insufficient; the red light flashes and needs to be charged, the green light is always on when it is full. 14. Product net weight: 340g (single flashlight) 15. Product gross weight: 400g (single flashlight + USB cable + white box) Features: 1: Lamp beads, using 18 T6 lamps, lumens up to about 5400LM, lamp life about 100,000 hours. 2: Convenient charging, USB direct charging, can charge without disassembling the battery, and the power red and green display reminds the power status. 3: Flat lens, good light transmission, aluminum head protection mirror is not easy to be scratched, aluminum light cup, uniform reflection light, large irradiation area. 4: 4 18650 batteries can be used, which can be removed and replaced at any time, and batteries of different capacities can be replaced according to personal needs 5: Battery contact, battery spring contact design, with good electrical conductivity, effectively preventing poor contact.