USB rechargeable LED Bicycle Bright Bicycle Headlight and Rear Tail Light Set New High Quality Model: 2256 USB rechargeable bicycle rear light group Color: Black Battery: lithium battery (3.7V, 1200MAH) Charging: USB charging Size: 10.5*3.3*9cm Features:1. Unique design: Use XPE (about 200lm) as the light source. 2. High performance optics: Night viewing distance: 30-50M 3. Water-proof: The switch and the USB Charge interface use a rubber chain. You can ride safely in the rain. 4. Click the switch: long press for 2 seconds to turn on, then short press the switch to switch modes. Press and hold for 2 seconds, the light will turn off. 5. Battery indicator: The red light indicates the power is less than 25%, and the light is off when the light is over 25%. Blue light means full power. 6. 4 paragraphs: Power Mode (200lm) - 3 hours Standard Mode (100lm) - 4 hours Eco Mode (501lm) - 7 hours Flash Mode (200lm) - 6 hours 7. Battery: lithium battery (3.7V, 1200MAH), charging time: 3-4h, operation 3-7h 8. Screw bracket: easy installation Package includes: 1 set of bike lights