Features: Show both engine RPM and hours of operation.LCD screen display showing data clearly.Reads up to 60,000 RPM.Includes internal battery, no power connection required.Easy installation, suitable for 2/4 Stroke Engines, RC Toys, PWC, ATV, Motorcycles, Marine Engines, Chain Saws, Tractors, Lawnmowers, and gas powered tools.Specifications: Material: Plastic Color: Black Display: LCD Digital Power Supply: Internal Battery(CR2430) Waterproof Grade: IP68 Package Weight: approx. 85g Fitment: for 2/4 Stroke Engines, RC Toys, PWC, ATV, Motorcycles, Marine Engines, Chain Saws, Tractors, Lawnmowers, and gas powered tools. Package Included: 1 x Tach/Hour Meter with Wire 2 x Zip Cable Tie Note: It is easy to install, but professional installation is highly recommended. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin