1. [NO BATTERIES NEEDED] Say goodbye to batteries with this mechanical odometer for convenient and precise measurements.
2. [DURABLE MATERIALS] Made of quality materials, this speedometer is sturdy, durable, and waterproof, ideal for all weather conditions.
3. [EASY INSTALLATION] Compatible with 26in, 27.5in, 28in, and 29in bikes, and designed for easy installation.
4. [COMPREHENSIVE DATA] Track your total mileage, single mileage, and MPH with ease for a detailed analysis of your cycling performance.
5. [EFFORTLESS RESET] Use the reset knob to clear data quickly and efficiently, ensuring hassle-free operation.

Specification:
Features:
Mechanical odometer, no battery requires, easy to use, precise measurement.
Made of good quality materials, sturdy and durable, waterproof, suitable for all weathers to use.
Suitable for 26in, 27.5in, 28in, 29in bikes. Easy to install.
Let you know the total mileage, single mileage, MPH.
With a reset knob, it to make the data clearing.
Specification:
Material: Plastic
Color: as picture shown
Size: Approx. 12*8*5.5cm/4.72*3.15*2.16in
Weight: Approx. 342g
Package List:
1 x Mechanical Odometer
1 x Cable
1 x Adapter