Energy Saving:Power Source: BatteryBattery Level Indicator: yesAdditional Information: water proofFunction:2 Bike Adjustable Program: yesDistance Km:Km Wheel 1Km Wheel 2Days KmTotal KmLight Function: yesBackup Function: yesStart / Stop Function: yesSpeed Sensor Function:max speed km/haverage speed km/hComparison of current speed and average speedactual speed km/hTime Function:timestop watchtravel timeTemperature Gauge: yes