Description:* new and high quality*Made of high quality material, durable and functional*Functions: time, speed, distance, calories*Scope of application: magnetic control car, spinning bike, fan bike, walking machine, waist training machine*Note: You need to buy batteries and magnets by yourself separately,Specification:*material: plastic*Color: Black (the color of the speedometer button is shipped randomly) (As Pictures Show)*Size: Approx. 140*88mm (As Pictures Show)*Battery: 2x AAA batteries (not included)*Weight: about 110gPackage includes:1x Exercise Bike Speedometer(Battery Not Included)Note:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.