Features:1. This is a very classic style Bicycle Sedometer, pure mechanical. 2. Easy to install. Left or Right Mountable, Resettable. 3. Universal for 26, 28, 29, 27.5 inch bicycles. 4. Accurate date, made of ABS material, weight and durable. 5. It works well to measure sed ,distance, riding time.Notice:1. Actual color may be y different from the image due to different monitor and effect. Please allow s deviation due to manual measurement.Scification:Ty: Bike SedometerMaterial ABSColour: BlackFeature: mechanical, accurate data Suitable for: 26, 28, 29, 27.5 inch bicycles Bayonet size: about 2cm Feature:Left or Right MountableSed in RPMConnectingLis resettable includes:1 set x Bike Sedometer Kit About Shipping: All items will be shipd within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The scific delivery time is dend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooration and we'll make you feel satisfied.