DescriptionAre you looking for a professional, yet affordable bike rear light? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional bike rear light must meet you needs. It is one of the best choices for you.Features- Color: Black. - Material: Plastic and metal. - Size: About 5.3x5.3x3.4cm/2.08x2.08x1.33 inch. - Battery: 500mAh. - Maximum Brightness: 100 lumens. - Floodlight Angle: 180. - Made from material, durable to use. - USB charging, can be charged anytime and anywhere. - The brake is detected, the headlight is highlighted for 5 seconds, and the slow flash state is entered. - Stand still for 10 seconds, automatically extinguish, no loss of power. - Easy to install and uninstall.