Feature:Use safety: provide overcharge, overdischarge, short circuit protection, use longer and safer. Multi-function: It can be used as a camping light/flashlight/emergency light, suitable for high brightness, low brightness, low brightness and other different modes of age and flashing. Long-term operation: high brightness 500 lumens, high brightness can be used for 4 hours, medium brightness can be used for 7 hours, and low brightness can be used for 20 hours. Mobile power supply: It can be used as a USB output port power supply to charge your smartphone or mobile device in an emergency, or you can use another power supply with an input port to charge items. Waterproof: IPX4 waterproof, moderate rain and splash proof. It can provide emergency help when you are out. Portable design: Portable fastening strap and locking clip make the lantern to be carried anywhere. You can hang it on your backpack specification: Material: Aluminum alloy + ABS Number of LEDs: 30 (5050 LEDs) Max. Brightness: 500 lm Max. Beam: 30 meters away Light mode: 9 Game time: 4 hours in its brightness. Water resistance: IPX4 (moderate rain, splash) Power supply: Built-in 5400mAh rechargeable lithium battery Volt: 5 v / 1 Power: 15 w Charging method: USB charging Lantern size: 13 * 9 * 4cm / 5.1 * 3.5 * 1.6 inches Packing size: 18 * 11 * 6cm / 7.1 * 4.3 * 2.4in Package weight: 418g / 14.7oz packing list: 1 * lamp 1 *Hand hook 1 * USB cable 1 * carry bag