bike odometer and speedometer and high qualityMade of high-quality materials, and practical and high quality Made of high-quality materials, and practical Function: Scan: Automatically scan all function values Times: Measures elapsed from the start of exercise to it stops Speed: Measures instantaneous speed Calories: Measures calories burned from start to of exercise Mileage: Measures the distance traveled from the start of exercise to of exercise Total Mileage: Measures the total distance traveled from the start of exercise to of exercise Material: ABS Size: .164x108x28mm/6.5x4.3x1.1inch Color: black Package Contents: 1 x Exercise Bike Speedometer Monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.