CatEye RAPID X3 USB Rechargeable Rear Safety Light for Bicycles (TL-LD720-R)

Size: 74x31x39mm Weight: 46g (main unit + battery only) Battery used: Lithium-ion rechargeable battery Usage time: High: approx. 1 hour / Low: approx. 5 hours / Daytime Hyperflash: approx. 8 hours / Rapid: approx. 16 hours / Group Ride: approx. 16 hours / Flashing: approx. 30 hours Charging time: USB charging, approximately 3 hours