HD 8K 6K 4K 3K 8000rpm Boat Tachometer Marine Tacho Meter Gauge LCD Hourmeter 85mm Car Tachometer Toerenteller 7Colors BacklightHD 8K 6K 4K 3K Boat Tachometer Marine Tacho Meter Gauge LCD Hourmeter 85mm Car Tachometer Toerenteller 7 Colors Backlight Package 1 1X 85MM Tachometer 1X Instruction Package 2 1X RPM Sensor The sensor needs to be purchased separately, the tachometer does not include a sensor, please know, thank you Feature: Waterproof: IP 67 Excellent anti fogging function; With curved glass( with anti fog function). 316 Stainless steel bezel with curved glass;