Feature 1Long Life: Built in button battery CR2050 power supply, low power consumption design, the battery life is about 5 years when working 8 hours a day. Automatically store data, will not be lost for more than 20 years. 2Inductive Design: Just wrap one end of the induction wire around the spark plug 5 times, after continuously detecting the ignition signal of the spark plug, the real time engine speed will be displayed and the timing will start. 3Application: Widely used in garden machinery such as hand push lawn mowers, riding lawn mowers, chainsaws, etc.; marine industries such as jet skis and outboard motors; vehicle industries such as motorcycles, off road vehicles, ATVs, and snowmobiles, etc. 4IP68 Waterproof: The premium quality engine hour counter is completely sealed and has a waterproof rating of IP68. It can be used normally in harsh environments such as heavy rain, highly dependable. 5Multiple Function: Timing function, speed function and sleep function. LCD digital display, easy to read, concentrate on driving to ensure safety. Professional design to solve more of your problems.Item Type: Digital Tach Hour MeterMaterial: ABSPower Supply Voltage: 3VPower Consumption: 0.001WOperating Temperature: -20 to +65Timing Range: 0-99999HTiming Accuracy: 0.1/1HSpeed Range: 0-30000RPMSpeed Accuracy: 10RPMRefresh Rate: 0.5SDisplay Mode: LCDWaterproof Grade: IP68Battery: Built in 1PC button cell battery CR2050 3V 350mAhLCD Display: Viewing angle direction 6 o'clock5 Digit Digital Display: Font height approx. 5.8mm/0.23inLCD Temperature Range: -30 to +80Function: 1. Timing functionA. Total time: record the total working time of the vehicle, the timing range is: 0-99999HB. Single timing: record the time of a certain work of the vehicle, the timing range is: 0-99999H, can be resetC. Timing accuracy: 0-9999.9H is 0.1H, 10000-99999H is 1HD. It cannot be cleared when totaling, which can avoid operation errors.2. Speed functionA. After the engine ignition signal is detected, the real-time engine speed is displayed.B. The speed range is: 0-30000RPMC. Engine stroke selection: 1P1R 1P2R 2P1R three engine strokes can be selected3. Sleep functionA. When there is no button operation or the engine stops working, it will automatically enter the sleep mode to save battery power consumptionApplication: Widely used in hand push lawn mowers, riding lawn mowers, chain saws and other garden machinery; rammers and other road machinery; water motorcycles, outboard motors and other marine industries; vehicle industries such as motorcycles, off road vehicles, ATVs, and snowmobiles; portable generators, RV generators and other generator industries; powered paragliders and other sports equipment; branch chippers, weeders, seeders and other agricultural machinery; and other gasoline engine equipment with spark plugs. Package List 1 x Digital Tach Hour Meter2 x Cable Ties1 x Wiring