Power 120 Auto USB Rear Light

120-lumen USB rechargeable rear light. Super powerful COB LEDs. Automatic on/off depending on ambient light. Water resistant. Functions: standard steady, medium-power flashing or steady, high-power flashing or steady, and intermittent flashing. Low battery indicator. Fast charging in just 2 hours. Attaches to any saddle post or other object using the silicone mount, or to other items such as clothing, helmets, bags, etc., using the clip mount. USB cable included.