Multi-function Mini Digital Bicycle Speedometer/Odometer Maximum tire circumference: 239cm Display: km/h, m/h Measures: Current speed, total distance (odometer), trip distance, maximum speed, average speed, elapsed time, RPM 100% Brand New. Never used. It comes with 3 Months Warranty by Seller. Next time you go on a bike ride, take this handy digital speedometer with you to measure how far you"ve biked, your maximum/current speed, and other nifty functions. Small, compact and waterproof, the digital speedometer can be easily attached, providing you with a helpful batch of information for bike trips in rain or shine. It"s great for anyone who enjoys bicycling, and for professionals who want to take their cycling to the next level. Improve your stamina, keep track of your bicycle runs and have a great time with this convenient gadget. Features: 14 useful functions such as traveling time, distance, clock, average speed, etc Compact design, take along anywhere and everywhere Waterproofed allows for unlimited use in any condition Specifications: Maximum tire circumference: 239cm Display: km/h, m/h Measures: Current speed, total distance (odometer), trip distance, maximum speed, average speed, elapsed time, RPM Size: 5 x 4.2 cm Weight: 2.3 oz Quantity:1