Smart light sensing allows it to automatically adjust the brightness of the lights according to the intensity of the ambient light. The 85-degree large floodlight angle design makes the light range wider and the visibility high.Convenient removal and installation steps allow you to operate it without tools. And the non-slip design of the bottom makes it very firm and not easy to loosen.Made of aluminum alloy material, it is very durable to use.The length of this product is 9.8cm, the width is 4.3cm and the height is 2.3cm.It is suitable for outdoor, night, cycling, dark environment, bike and so on.Item Name: Bicycle LightMaterial: Aluminum AlloyBattery: 3000mAhLumens: 600 LumensLamp beads: 2-XML2Flood angle: 85 DegreeCharging method: USB ChargingFeatures: Stable, Anti-fall, Easy to InstallMode: Smart Light Sensing/High Brightness/Mid Brightness/Low Brightness/FlashingSize Details: Size: 9.8cm x 4.3cm x 2.3cm/3.86" x 1.69" x 0.91" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Bicycle Light1 x USB Charging Cable1 x Chinese and English User Manual