BE SEEN AT NIGHT; Have your bike seen side-on while riding at night. The bright LED light will ensure you are seen for all your night time riding 1 BUTTON, 3 MODES; Choose from 3 types of modes: Strobe/ Flash /Multi-colour cycle. Press the middle button to start and to scroll through the modes EASY TO INSTALL; Securely weaves between the spokes. Press on to the spokes of the wheels and slide towards the wheel rim to fit securely. For extra security, affix to the spoke with cable ties PERFECT FOR KIDS AND ADULTS; Fun colour changing lights for adults and children's bikes. A great little addition to any bike, this LED spoke light will make a great Christmas present for all BATTERY POWERED; Uses 1 x CR2032 battery for each light (included). Please remove the plastic battery guard before use Quantity4pcs