Type-C Rechargeable & power tracking :3 hours of battery life in highlight mode,standby time up to 24 hours; With smart indicator, keep track of the power of the lights.4 Light Modes: With 4 different light modes of front light ( High light / Medium light / Low light / Fast Flashing) for your choice. Beside,light offer SOS mode to prevent accidents in outdoors.Dual-core LED Lamp Beads: USB bike light consist of two LED-T6 lamps with a brightness of 2400 lumens; The dual distance beam system produce wide and flat lights in 120range (Maximum Beam Distance: 300 meters )to light your dark road.Added a lamp head protective cover.Easy to Install & Adjustable Bracket:bike lights are suitable for handles with a diameter of 20-32MM(0.79in-1.26in), 360-degree swivel bracket for free adjustment of the headlights angle.IP65 waterproof & Muti-function: IP65 waterproof prevents splashing at any angle. Used for cycling, hiking, running, camping, or other outdoor activities, it also can be a emergency safe light.