Ciclonyx Bicycle Turn Signals Rear Light with Wireless Remote Laser Light - Wireless Remote Control Rear Lights - Automatic Turn On/off - USB Rechargeable Built-in Battery Wireless Remote Controller, Easily Operate Rear Light, Functions: Turn Right/Left, Stop Alarm, Laser On/Off Extreme-high brightness and penetration even in the rainy/foggy day, it can still deliver clear signal to others in case of vision lost. Removable Buckle Design, Easy Install, Stable Fixation, Laser Warning Safety Width, Light Streamline Effects, Flashing The light detection system automatically controls ON/OFF based on the day and night.TWENTY-NINE 85 lumens LED's provide visibility up to a mile. Turning mode:turn right, turn left. 3 flashing modes:flashing, steady, cross-flash. 2 laser modes:steady, flashing.Equipped 2 USB rechargeable 18650 batteries without loading.