SPD - Current speed ODO - Odometer DST - Trip distance MXS - Maximum speed AVS - Average speed TM - Elapsed time CLK - Clock (12H / 24H adjustable) Speed comparator - During riding， '+' and '-' indicates the current speed Scan - Screen display alternates among DST， MXS， AVS， TM every 4 seconds Freeze Frame Memory: press left button anytime to enter FFM mode， then press right button to check the records Setting speed scale (km/h， m/h) Setting tyre circumference - wheel size from 0 to 9999mm Automatic and manual on/off function， Sleep model WIRELESS Transmission