Description: Multi Functions: Bike Computer is a high precision bicycle odometer with 15 functions, including speed measurement and distance calculation, suitable for all types of bicycles.Premium Material: Our Bicycle Speedometer is made from quality materials for strong durability, capable of functioning normally in various harsh environments.Convenient to Install: The Cycling Computer is easy to install without the need for any tools, and installation can be completed within minutes.Compact and Lightweight With its compact design and small size, the Bike Odometer is easy to carry and does not add any burden while cycling.Waterproof Design: Mountain Bicycle Odometer features a waterproof function that allows it to operate normally even on rainy days. Specification: Material: PlasticPackage Size: 18cmx10cmx2.5cm/7.09inchx3.94inchx0.98inch Package Includes: 1 Bicycle Speedometer Note: Please allow slightly errors 1-2cm differences due to manual measurement.