Xeccon Link Self Contained 300 Lumen USB Rechargeable Sensing Road Commuter Handlebar Bike Light BSS&reg; Bright 300 Lumen output, using 2nd generation Cree XM-L2 LED Very compact and lightweight road/commuter light, for 25.4-41mm handlebar! Built-in USB rechargeable 1000mAh Battery! With 3 types of strobe function and sensing function!!! Very easy to use, install, and remove!!