Features LED turn signal light for riding safety. Easy operation by remote control. 4 turn signal pattern: right, left, forward, stop Signals are clear and highly visible. Durable and waterproof. Adjustable strap fits all size. Charge by USB charging cable (included). Fashionable style and unique appearance get you outstanding. Main function: turn signal for bike riding, traveling, hiking, touring, etc. Specifications Material Dacron, Oxford cloth Transmission distance 3 meters(depending on the surroundings) Battery for the transmitter 2 x button cells 2032(included) Working time 24 hours. Dimension 21L x 20Wcm Weight 230g Package content 1 x turn signal bike vest, 1 x remote control, 1 x USB charging cable, 1 x User's manual