Specification: Item Type: Wireless Hour Meter Material: ABS, Metal Applicable Type: Suitable for Bike Generators, Marine Motors and Equipment That Vibrates While Working Battery Type: Button Battery (Shipped with Built in Battery) Battery Type: CR2430 Number of Batteries: 1 Piece Battery Capacity: 270mAh Total hours maximum value is 999999; Total hours reading display range is 0 to 9999.9h with 0.1H accuracy; Total hours reading display range is 10000 to 9999h with 1H accuracy. TOT hours are not resettable. ServiceTimer(SVC)Functions:ProgrammableMaintenanceTime,SuchAsAirFilterChange,OilChange. LCD will flash an alarm when maintenance work is required. Countdown timer tracks service reminder time with 0.1H accuracy. JobTimer(job)Function: Used to measure the time for a specific job. The job timer contains two job timers: Job and Job 1. Job timer readings are displayed from 0 to 9999.9h with an accuracy of 1 minute. The job timer can be reset. Programmable Vibration Sensitivity: Used to accurately sense the vibration frequency of different machines during operation. Three vibration sensitivity options are included: SEN 1 (low), SEN 2 (medium), SEN 3 (high). SEN 1 is suitable for low vibration equipment with vibration frequencies greater than 32 Hz. SEN 2 is for medium vibration equipment with vibration frequencies greater than 18 Hz. SEN 3 is suitable for high vibration equipment, whose vibration frequency is greater than 4 Hz. Package List:1 xWirelessHourMeter 1 x Instruction Manual1 x Installation Sticker