Specification: Features: 1. It has 4 Led signals: Left, Right, Forward Stop, Whenever you ride in the day and at night, This reflective LED signal bike pack warning lights will keep you safer by reminding passengers and drivers keep distance from you. 2. Wireless compact controller, safely use when riding. Tied or mounted the wireless transmitter on the bike, so you never has to take their hands off the handlebar. 3. This LED reflective bag has adjust strap can be easily assembled on your own cycling backpack or just wear on your back, Designed for easy on and off, quickly release. 4. This visibility vest is equipped with a USB rechargeable battery, which can be charged simply through connecting to your computer or mobile power bank with USB port. 5. High quality water repellent polyster fabric with good water resistance and effective in preventing rainwater. Padded mesh back pocket to hold your cards and money while improving breathability and comfort. Specification: Operating frequency: 2.4 GHz Transmission distance: 3 meters related to the surrounding environment Remote control battery: 2 x 2032 button batteries Receiver battery: Built-in battery 650mAh Working hours: 24 hours Charging: DC 5V 500mA Remote control shell material: PCABS Material: Nylon, Oxford cloth Size: 235mm*240mm*15mm Elastic bandage length: 185mm, 300mm maximum stretch Notice: 1.Due to the different monitor and light effect, the actual color may be a slightly different from the picture color. 2.Please allow 1-3cm differs due to manual measurement. Package List: 1 x remote control 1 x receiver 1 x Manual 4 x Tie