A bike computer for a turbo trainer HAS to be attached to the rear wheel for obvious reasons. Most wireless computers don't work at distances greater than 60cm. Most wired computers don't have a wire long enough to reach the rear wheel as they are designed for FRONT WHEEL installation.
This computer is rain proof but WON'T withstand prolonged soaking
LCD Display BATTERY SUPPLIED
Functions
SPD Current Speed ODO- Odometer(0-9999km/m) Trip Distance MXS-Maximum Speed AVS-Average Speed CLK-Clock(12/24hr) Stopwatch SCAN Cycles through the different readouts Metric/Imperial Auto On/Off Signal Interference Resistance Back Light
Computer Battery Installation
Remove the battery cover from the bottom of the computer by using a coin / install CR2032 battery supplied with the positive (+) pole facing the battery cover and replace the cover. Should the LCD show irregular figures, take out the battery and reinstall it.