Smart Bike Tail Light Brake Sensing Rear Lights

[Smart Brake Sensing and Easy Installation] - Automatically switch to highlight mode when braking to improve your safety. You can mount it under the saddle with a metal mounting bracket, or to the seatpost with an adjustable silicone strap.[6 Lighting Modes and High Lumen LED] - There are 6 lighting modes for you to choose, (1) Constant Mode, (2) Breathing Flash Mode, (3) Fast Flash Mode, (4) Slow Flash Mode, (5 ) Rhythm Flash Mode (6) ECO Mode Enjoy Riding As you wish, the high lumen COB Led Bike Tail Light makes you more visible, it is the perfect bike light for night riding.[BATTERY SAVING AUTO ON/OFF] - This smart bike tail light includes motion sensor and light sensor and will automatically turn off when no motion is detected. Once you touch it or detect that the bike is moving, the light will automatically turn on again. Also, when you ride in the sun, the taillights will automatically turn off because the light sensor is working, if you like to ride in the daytime and need the taillights to work all the time,[LONG BATTERY LIFE AND POWER INDICATOR] - The USB rechargeable bicycle tail light has a built-in 350mAh Li-ion battery, which can last for 45 hours when fully charged.Mounting Placement: SeatpostInstall method: Saddle / SeatpostSmart Sensor: Brake/Motion/Light SensingNote: Please use the charging cable included in the package to chargeColour:black+redMaterial:Aluminum alloySize:7 x 5 x 4cmPackage Contents:1 x mountain bike tail lightOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.