If your Wattbike Performance Monitor is not switching on please press the reset button on the back of the unit. You will need a small object such as a paperclip to do this.
Once you have done the above please charge the unit for at least 14 hours using the Wattbike charger which was provided with the bike upon purchase.
We do not recommend using an alternative charger e.g. Laptop charger as this can damage the circuit board of your unit.