1. Real-time display of the current speed,trip distance,riding time,trip time,calorie consumption and current time. 2. Easy view of the maximum speed,average speed ,total riding time, total riding distance and rotations per miunte of the wheel. 3. Options of 12h/24h systems,stopwatch feature and alert feature for bicycle maintenance. 4. Length unit options of klometer/mile. 5. Real-time indication of acceleration or deceleration for easy control of your speed. Functions: : CURRENT SPEED ODO : ODOMETER : TRIP DISTANCE : MAXIMUM SPEED : AVERAGE SPEED TM : ELAPSED TIME CLK : CLOCK (12H/24H) Note: Sensing distance of the probe and the magnet holder 5-10mm Battery:1 x AG13 button battery (Not Included) Colour: black + red Material: plastic Package Contents: 3 x bicycle computer 3 x bracket 3 x magnet 3 set x cable tie Note: 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.