Description: Ingratiated brake sensing techniques. COB LED. Full 6061 Aluminium alloy chassis. Automatically turn on or off depending on the light intensity and motion. Automatically switch to sleep mode to save power. Two types of mounting kits can buy (cushion mounting or seat tube mounting). 6 flash modes. 500mAh Li-ion re-chargeable battery. Longer use time, 30 percent higher than the old model ,up to 32H. (slow flash mode) USB charging. Charge stage indicate. Compact and Light weight design (48g). IPx6 Water proof. Auto or Manual mode switchx. Note: xManual mode need to switch on or off the light manually. Specifications: Auto or Manual mode switchx. Note: xManual mode need to switch on or off the light manually. Working principle Manual mode: manual control switch with brake sensing function Auto mode: light sensor, vibration sensor, brake sensor. In automatic mode,the tail light is off and there is still a brake sensing function. Package Included: taillightx1 USB cablex1 Bracketx1 Notes: Please check the detail size or model information before purchasing. Due to the different monitor and light effect , the actual color of the item might be slightly different from the color showed on the pictures . Thanks for your understanding. Please allow 1-2 cmmeasuring deviation due to manual measurement. Chat with us should you need any assistance. Note: 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.