XIANQI LED Bicycle Lamp USB Rechargeable 5 Modes red White Road Bike Taillight Safety Helmet Warning Light Cycling Equipment Feature: When charging, the red light is always on; after charging is complete, the red light turns green. ; 5 Modes lighting.Switch the lights you need as needed. Red + white light, red light for warning, white light for normal lighting, if the car breaks down at night, white light is suitable for repair.It can also be used as helmet lights, running lights, backpack lights, hat clip lights. ; 5 modes: short press, red-red flash-White-White flash-Red White flash, cycle switches. In any mode, press to turn off the light after lighting for 5 seconds, or press for 2 seconds to turn off the light. Battery: 250mAh polymer battery (included) Charging time: 1h Working time: 10-20h Charging method: ; USB charging Colour: Black Size: 62x24.5x21mm Delivery Quantity: 1 Piece