UseScenarios: nature camping/hiking adventure/night riding/outdoor rescue/construction site enquiry/safety patrol/night fishing/torch/mobile phoneCharging function1.Breathable elastic band mounted on the head for size adjustment. Comfortable to wear.2.Luminous cup body lengthened to 60mm, cup diameter increased to 82mm, providing a wide range of illumination.3.Can shoot 500 metres long.4.Charger built-in 2000mAh 18650 Li-ion battery x 2, can be charged by USB plug/car charger/mobile power. It can also charge mobile phones.5.Three gear modes: strong light - low light - blinking.6.Remaining power display 25% 50% 75% 100%Instructions for useWhen the switch is unlocked: 1) Press once for strong light, second for weak light, third for blinkingSpecificationMaterial: ABS+AluminiumAlloy Colour: Black+YellowWeight: 300g (rechargeable)Battery:18650 2000mAh lithium battery × 2Product size: Head 8 × Tail 9 × Length 10.6 cm Colour box size: 13.8 × 9.5 × 10 cmLamp Wick: XPGWick Brightness: 300 lumensBattery life: 4-6 hours in high light mode / 8-10 hours in low light mode.Voltage: 3.7V-4.2VShooting distance: 500 metresWaterproof: IPX46Sellers warranty: 30 days