Phorsen Auto-Sensing Rear Light Smart Bike Tail Light Bicycle Safety Warning Flashlight Red Led Taillight IPX6 Waterproof Road Mount Cycling Lights USB Rechargeable Ultra Bright Light

Material:ABS+PC Battery Voltage:3.7V Battery Capacity:350mAh Charge Input:5V-280mA Charge Time:2.5h Charge Method Please charge the tail light fully for the first time. In charging,the green light inside the lamp shade flashes, with the full charge,the green light is always on. Energy Indicating Function Click the switch when the power is off:the energy is over 80%; if the green light is on for 2 seconds;The energy is 20-80% if the green light flashes slowly for 2 seconds;The energy is below 20% if the green light flashes quickly for 2 seconds. When the power is on,the green light flashes quickly for 1 minute to indicate charging if the energy is below 20%. Usage ON/OFF?long press the switch to switch on/off the machine. Flashing mode:click the button to select the flash mode after starting up Mode:long on,breathing flashing,slow flashing,quick flashing,           rhythm flashing,energy saving flashing.