[Ultra Bright to Keep You Safe]: 260-degree wide angle provides enhanced visibility. The COB lamp beads produce bright light, making this rear bike light visible from a distance, helping to improve cycling safety. [Wireless Remote Control]: The handlebar-mounted remote control allows you to switch lighting modes using the wireless controller buttons while riding. Suitable for use as a bike tail light, helmet light, caution light on a stroller, or camping light. [6 Light Modes & Waterproof]: Includes turn left, turn right, brake light, steady red, fast flash, and flowing light modes. Weather-resistant design for use in various conditions. [USB Rechargeable]: Rechargeable via USB port; no batteries required. Fully charges in approximately 2 hours and runs up to 12 hours in constant brightness mode. [Easy to Install]: Supports horizontal or vertical mounting with a 360-degree rotatable mount. Quickly attaches and detaches from handlebars, seat posts, frames, or helmets without tools. Lumens: 100LM Battery: 500mAh Beads: Bright COB Weight: 30g Size: 88x19x30 mm Charging: USB rechargeable (approx. 2 hours) Battery Indicator: Green, red Running Time: 515 hours Light Modes: Steady, Flash, Strobe Color: Black Material: ABS Package Contents: 1 x Bike Light 1 x Remote Control Note: Light reflection and display differences may cause slight color variation between the image and actual item. Measurement may vary by +/- 13 cm.