Product Description: Quantity: One Piece Product Name: Tachometer Product Model: RL-HMO11N Time delay range: 0-99999H Timing accuracy: 0.1h/1h Maintenance range: 0-9999.9H Speed range: 0-30,000 rpm Speed accuracy: 50RPM Refresh rate: 0.5S Display mode: LCD Display size: 41*12mm Product size: 73.5 x 46.7 x 20 mm. Induction line length: 1.75mm Battery type: CR2450 Installation Method: Surface Mount Shell Material: ABS Sealing level: IP65 Packing method: white box packaging Package size: 72*72*48mm Hour Meter ---- Contains tachometer, hour meter, service meters; helps you track how many hours you have spent on your engine. The total number of hours can be reset; 0.1 hour accuracy MAINTENANCE REMINDER ---- Programmable maintenance timer (SERVICE), countdown maintenance reminder time; When the maintenance time comes, the service warning icon flashes to remind SPEEDOMETER---- Accurately records your RPM when the engine is running, helps to adjust the engine speed idle; can be programmed for different engine firing modes REPLACEABLE BATTERY----Internal replaceable CR2450 battery, data retained after battery replacement; When the engine is stopped, the player will automatically turn off after 2 minutes; press button to read screen, data retained after shutdown