Description:It is convenient for you to observe the meter in the dark driving process, because the bicycle meter has LED backlight and night running light.High working accuracy and professional performance can be ensured by the speed sensor designed on the speedometer.It is made of high-quality plastic material.The length of the product is 6 cm, the width is 4.4 cm, the height is 1.5 cm.It is suitable for bicycle.Item Name: SpeedometerMaterial: PlasticFeatures: High Precision, LED Screen, Portable Battery: 1 x Button Battery(Included)Size Details: 6cm x 4.4cm x 1.5cm/2.36" x 1.73" x 0.59" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Speedometer 4 x Cable Ties 2 x Foam Shock Strips (1 Rectangle, 1 Square) 1 x Rubber Ring 1 x Base 1 x Button Battery 1 x Magnet 1 x Wireless Probe 1 x User Manual