This LED bike light vest has adjust strap can be easily assembled on your own Cycle backpack or just wear on your back, Designed for easy on and off, quickly release. The LED reflective vest has 5 signaling modes: turn left, turn right, forward, stop, standby, from turn signal to emergency signal to remind the driver to keep their distance. It reflects strongly at night and can be clearly seen during the day, greatly improving safety. This is a rechargeable LED turn signal vest with a built-in 500 mAh lithium-ion battery. The indicator signal of the LED reflective vest is controlled by the remote control. You can mount the remote control on the handlebars of your bike or scooter or hold it directly in your hand according to your needs. This is a high visibility reflective vest. The whole vest is made of nylon, lightweight and easy to wear. This is an ideal safety equipment for cyclists or joggers who often spend time at night. Signal Frequency: 2.4GHZ Remote controller battery:2xCR2032 Receiver Battery:3.7V 500mAh lithium battery Size:29x19x1.5cm/ 11.4x7.5x0.6in Weight:230g/8.1oz Colour:Yellow Material:nylon Package Contents: 1 * LED Reflective Vest 1 * Remote Control 1 * USB cable Only the above package content, other products are not included. Note: Light reflection 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.