[3 in 1 flashlight]: This product has three functions: headlight, side light and red light.These three light functions can meet all the needs of outdoor activities.[ultra bright multiple modes]: The brightness is adjustable between 3 modes up to 11,000 lumens and the irradiation distance can reach 800 meters.Equipped with side lights, ideal for area lighting or camping.Hold the button to switch to SOS signal mode.[Large capacity battery]: Built-in 9600 mAh rechargeable battery, battery life can reach 10-20 hours after charging is completed.Equipped with USB interface, can also be used as a backup power source [aluminum and ipx4][waterproof]: ABS material is combined with high quality aluminum body;This structure is resistant to explosions, water, dust, humidity and shock.Waterproof class: ipx4 (only splash proof, can't stay in water for a long time)[after-sales service] If you encounter any problems, please feel free to contact us