Features: Elevates your cycling experience with the Tuning Chiptuning Box! This speed adjustment device for bikes, offering flexible control for a personalized ride. Experience precise speed range adjustments and improved control with the advanced design of it. Its intelligent control system allows for a smooth and comfortable ride every time. For bike enthusiasts who seek a customized and comfortable ride experience, perfect for electric bike users. Whether you're commuting in city or exploring new trails, it provide the flexibility to adapt to different road conditions. Switch between speed and make journey more convenient. Take your bike adventures. Adjust the speed according to different terrains, enhancing your control and maximizing the fun of your rides. Specifications: Material: Plastic Part Number: 164196 Package Includes: 1x Bike Tuning Chips Tuning Speedbox note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.