New Evodigitals Yellow Wireless Cycle Speedometer Bike Speedo Temp MPH KMH Odometer Current speed | Average speed | Odometer | Trip distance | Maximum speed Average speed | Elapsed time | 12/24 hour clock | Backlight | Temperature display Min RPM | Max RPM | + - Speed comparator | Calories burnt | Fat burnt Maintenance alert | Low power reminder Auto on/off Wireless - comes with everything you need including batteries