Features:Adopting high intelligent embedded CPU chip.Engineering plastic shell, IPX6 waterproof and shockproof.Support dynamic picture, RGB light, fashionable decor for your bike.Working time of 20 hours when fully charged.Programmable, you are free to make the pictures you like.Double-sided display, colorful light, eye-catching at dark night.Suitable for bicycle of 26 inches and above.Auto sleep after no operation of one minutes.Description:Safe, bright, easy to install, operate and spot.Making your beloved bike stand out from the others at night.Perfect birthday gift and Christmas present for your boys, girls, husband, friends and yourself.Specifications:Material: plasticLight Color: colorfulLength: 505mmPackage Included:1 x Rechargeable Wheel Lamp2 x User Manual1 x Fixed Strap Kit1 x 18650 Rechargeable Battery1 x Battery Case1 x Sensor1 x Download CableNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Due to different personal measuring techniques, there might be 1-3cm error of the physical. Thank you