Echo a1 User Manual Brandname: Echowell Category: Bicycle Accessories Total Pages: 36 Table of contents Contents2PackageContents3Introduction4UsingYourComputer61InDataSettingMode8ButtonDNoFunction9ButtonD103WheelCircumference11Yourself12TipForDataSetting135GeneralDisplay176BatteryReplacement187GeneralModeDisplay199TemperatureDisplay2111DataReset2212ElBacklight23Functions24MaxMaxSpeed25RpmCurrentCadence263Attention273Attention28Low30GeneralSpecifications33Precautions34TroubleShooting35LcdIs36