Features: The Chinese English switching function is convenient for users to use and suitable for cyclists with different language backgrounds. High accuracy sensors can accurately record cycling speed, ensuring the authenticity and reliability of the data. Wire reduces signal interferences, ensures stable data transmission. In addition to speed and mileages, it can also display information such as travels time and average speed, comprehensively monitoring the cycling condition. Comes with installation tool and instructions, simple and clear, allowing cyclists to easily complete the installation. Specifications: Dimension:51×42×18mm/2×1.65×0.71in Component:ABS Package Includes: 1Set Wire Bicycles Odometers Speedometers note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.