The Blinky Squared Ultra tail light is a 50 lumen 5-function USB-C rechargeable bike light designed to help you stay visible while on a bike ride. Delivering 50 lumens of powerful illumination, this compact 1.25-inch square tail light utilizes advanced chip-on-board technology to maximize brightness and efficiency. Its 16-LED circular array provides a wide 180° beam to capture the attention of traffic from both the rear and sides. With five versatile modes, the Blinky Squared Ultra tail light ensures you have the perfect setting for any condition. The Superflash™ Day mode, optimized for peak sunlight, is visible from up to one mile away, providing exceptional daytime safety. For steady, reliable illumination, the High and Low modes deliver consistent rear lighting, while the Courtesy™ and Steady Pop modes feature flashing patterns designed to maximize visibility in low-light or busy conditions. Thanks to its mode memory function, the light remembers your last setting, so you're always ready to go. The tail light runs recharges in just 2 hours via an included USB-C cable. Easily mountable with a rubberized stretch strap, the Blinky Squared Ultra fits snugly on seat posts, seat stays, or rack stanchions—no tools required.