a28 【Equipped with an Intelligent Light Sensor】 Equipped with an intelligent light sensor, which upgrades the light sensor to automatically adjust the brightness of the bicycle light according to the environment. 【USB Rechargeable and 2200mAh Capacity Battery】 The bicycle light is USB rechargeable and has three battery indicator lights on the switch. You can know the remaining battery level. Note: When charging, please use a suitable charging device. 【Easy Installation and Waterproof IPX65】 With a bicycle seat clamp, it can be easily removed from the handlebar holder, and can also be used as a light when removed. It can easily handle bad weather such as heavy rain. 【4 Lighting Modes】 There are 4 lighting modes: Light Sensor Mode -> Strong Light -> Weak Light -> Strobe (10Hz). ※ Due to imported goods, there may be small scratches or slight dirt during the manufacturing process. Please acknowledge this beforehand.