Bicycle computer. SD-546C (16Functions). FUNCTIONS. -. SPD CURRENT SPEED. -. ODO ODOMETER （0.001～99999km/m). -. DST TRIP DISTANCE. -. MXS MAXIMUM SPEED. Large, easy to read LCD display- Promotes bicycle safety: read data at a quick glance, so your eyes will be more on the road and less on the display! Hi i have a Otkos f18 and i have lost the manual, all it does is show a picture of a bike in the top left hand corner and a series of 4 numbers at theENGREPO Bike Computer, Wireless Bicycle Speedometer, Multi Function remove the battery to reinstall it,and follow the instructions to set the computer. Operation and setup couldnt be easier. The big screen surely helps with safety. I wanted just a basic unit that told me speed and how far ive gone. This unit is