Bicycle Rear Light LED, USB, IPX5

Bicycle Rear Light with rechargeable Li-ion battery.
 Features:  USB rechargeable. IPX5 waterproof. Optical technology. Low power indicator: when the battery power is remaining 20%, on/off button would turn to red, after finishing charging, it would turn to green.
 Specifications:  Installation: on the seatpost. Battery: Premium Li-Ion. Battery capacity: 200mAh. Charging time: 2 hours. Run time: 4 hours. Function: ON/OFF. Waterproof: IPX5. Low power indicator: yes. Material: ABS, PMMA. Weight: 40 g. Dimension: 42.8x40.3x46.9mm. Bike Light Certification: StVZO, CE, ROHS. LED Certification: CLM2B.
 Warranty: 24 months.