100% brand new and high quality Suitable for: camping,travel,cycling,hiking,excursions,trekking,daily leisure. Main function: bike riding,touring light steering,light is 2.4G wireless remote control LED to the back of the bag Product size: 180*120*110mm Material: polyester Function: Turn signal and stop warning Housing material: PC+ABS Communication method: radio frequency 2.4GHZ Control range. 3m Backpack/pendant: waterproof fabric Operating time: 12 to 15 hours charging time. 3 hours (with LED light) Remote control batteries: 2xCR2032 (built-in) Receiver battery: 4.2V,500ah lithium battery Indication type: left turn,right turn,forward,stop Colour: fluorescent,blue (optional) Product includes. 1*turn signal tail pack + USB charging cable Caution. 1. The monitor used is not the same,the computer is not the same,the angle of photography is not the same,there may be angle colour problems. 2. Pure manual measurement,there may be 0-1cm error.