Waterproof LCD Display Digital Hour Meter Inductive Hour Meter Tachometer for Bicycle Motorcycle ATV Marine Engine Snowmobiles Features: New and High Quality Control vehicle life: oil change, valves, adjustments, spark plugs etc. Easy to install Skin and stick Battery not needed - connect to spark plug wire works on each gas engine record and display in 9,999 hours.9 The hourglass symbol appears and turns on/off to indicate the counting time Automatic roller Resolution: 0.1 hour 100% epoxy resin housing is water, shock and fire retardant 85 deg; C Specifications: Original Box: Yes Color: Black/Blue/Red Optional Item Size: 54x31x14mm Package Size: 176x101x15mm Net Weight: 62g Package Weight: 81g Packing Contents: 1 Hour Meter 1x Cord 2x Screws