The M-Wave M14W is a fantastic tool to complement your cycling! Featuring wireless transmission between hub and unit, this computer has 14 functions! They include current/average/maximum speed, timers, odometers, and a freeze frame memory. The device is backlit for easy reading. Mounting without tools make installing the computer a snap. You will be amazed at what all this cycling computer can tell you! Digital transmission means no annoying wires to get in your way Other functions include an adjustable wheel size, a digital clock, metric/English conversion, and a No tools are needed to mount at handlebar or stem Ingress Protection rating 44 means nothing larger than 1mm can penetrate the device, and it is prote Batteries are included!