The Speedmaster HI-COB USB Rear Light is a super-bright cycling light equipped with a 50-chip LED for optimal visibility. It features 8 modes (4 static and 4 flashing), allowing you to customize your light for different situations. Water-resistant and equipped with a silicone bracket offering 6 mounting options, it is easy to install and adjust. USB rechargeable, it provides convenience and long-lasting performance for all your cycling needs.