Solar USB Dual Charging USB charging: fast charging Solar charging: charging, can also be used as emergency charging.;LED beads: high brightness long-distance shooting, longer, clearer and safer driving. Lighting mode: three lighting modes, optional, more practical and versatile.; Life is waterproof: do not fear rain, rain or fog. Fixing method: 360 rotating car clip Material: ABS imported AS new material Charging time: USB charging 6 hours, solar 12 hours Discharge time: 6 hours strong light, measured 12 hours low light, 12 hours flashing Waterproof: IP64 Bulb: 2 red LED Charging instructions: direct sunlight charging, long light mode can be for about 4 hours, flashing mode is more than 8 hours Size: 70 × 55 × 20 Installation: suitable for 2-3 cm outer diameter seat post; [Charging instructions] It can be charged in direct sunlight, it can be charged for about 4 hours in long mode and more than 8 hours in flashing mode; 1XSolar Bicycle Taillight [Charging instructions] It can be charged in direct sunlight, it can be charged for about 4 hours in long mode and more than 8 hours in \"light \" flashing mode, It can be charged for about 4 hours in light mode and more than 8 hours in flashing mode.