Gaciron W08F-20 intelligent front safety warning Fleas:Motion Sensor Work Smartly:W08 front light works smartly after ignition. It lights up when it detects motion status and turns off when it detects motion stop for 2 minutes.Clip at the back of the light:Easily attach to clothing or hats, use when running, jogging, hiking, camping, etc.Reflectors of light on the lens:When turned off or out of battery, it can still reflect the lights of other vehicles to ensure safety.Day Warning + 5 Modes:The front light W08 has 5 switchable modes, high brightness 20lumen. Unique daytime warning mode makes your bike safer during the day.500 mAh li-battery + 72h of performance:Built-in 500 mAh Li-battery, the longest working time can be 72 hours.USB Rechargeable + charge indicator:The front light W08 is USB rechargeable and has a charge indicator inside.IPX6 Waterproof:IPX6 allowing normal cycling in rainy weather.