Bought 2. 1 for a 26" and 2nd for a 24" bicycle. A little tricky to set the wiring and get the computer to exact tire size for accuracy but once done it's done. Display is easy to read. Did a 25 miler and compared units on both sized bikes. The was a slight mileage difference of about 1/2 a mile so I'll tweak the 24" size a little more. Over all a good buy!