Description: This is a great tool for its price. This Bike Computer Odometer Speedometer has many useful functions. It is also very durable considering even you have put over 500 miles on it, you even don't have to change the battery. It is functioned as tracking your training progress in real time. Easy operation and durability make it popular with people. Generally speaking, with it, you can control your riding every moment. Specifications: Functions: CLK : CLOCK (12H/24H) SETTING SPEED SCALE(KM/H.M/H) SETTING TYRE CIRCUMFERENCE:(0MM-9999MM) FREEZE FRAME MEMORY AUTO : ON/OFF Note:Sensing distance of the probe and the magnet holder 5-10mm Specifications: Size:46*46*15mm Net weight:67g Color:Black+Red Package Included: 1 x Bike computer console 1 x Universal sensor bracket (with 85cm cable) 1 x Wheel magnet 1 set x Cable tie 1 x Battery(have been installed)