85mm GPS Speedometer with Tachometer 

You can order it at www.aliexpress...
Name: GPS Speedometer with Tachometer
Materials: stainless steel+nickel-plated plastic
Operating Voltage: 12V
GPS speedometer indicating range: 0-200km
Tachometer indicating range: 0-8000rpm
GPS speedometer input signal: GPS signal, with GPS antenna
Tachometer input signal: tachometer sensor(need to be purchased separately)
Protection Class: IP67, can work underwater 1meter position