The DB-02 works with the inner battery is designed for bike without battery. With the elegant white back light, the meter display will become very clear in the night time. The meter comes with the changeable graphic tachometer which could fit almost all kinds of engines on the market and the new added engine hour meter is designed for you to maintain the engine. Digital multifonctions speedometerFits on most vehiclesTelltales : speeding warning, max temperature warning, shift light 3 stagesBattery type (LCD display) : CR2032 Functions Speedometer km/h (or MPH), up to 360km/h (or 223MPH)Customisable bar graph tachometer: up to 10 000, 15 000 or 20 000 RPMOdometer2 trip meterOil & water temperature visualisationAdjustable on tire circumferenceFuel meter & insufficient fuel warningTop speed, top RPM, max temperature recordingBattery life time: around 220 hours nonstopE-mark approval Included Power wiringTachometer wiring type ATachometer wiring type BTemperature sensorExtension temperature sensorPassive speed sensorMagnetsSensor bracket Type SSensor bracket Type SHandlebar meter bracket Color: Black