Usage Tips:Features: Material: This classic-style mechanical bike odometer boasts a sturdy aluminum alloy construction, ensuring durability and longevity even under demanding riding conditions Effortlessly install this odometer onto your bike handlebars using the included mounting hardware. Its compact size and lightweight design ensure minimal interference with your riding experience. Its vintage aesthetic adds a touch of classic charm to your bike, making it stand out from the crowd. This is more than just a functional tool; it's a stylish accessory that enhances your cycling experience. The simple, intuitive design makes this odometer incredibly user-friendly, requiring no complex setup or technical knowledge. Get started with your cycling adventures right away. Our product accessories are complete and easy to install, you can do-it by yourself without any effort. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: Aluminum Alloy Size: As picture show