Product Name: Waterproof Digital LCD Auto Motorcycle Engine Tach Hour Meter for 4 Stroke Gas Engine Model NO.: ZC-05T Mechanism: Electronic Carry base: Module-n Synchronous Counter Carry Mode: Synchronous Counter Theory: Digital Function: Addition Counter, Reversible Counter, Subtract Counter Usage: Timer Switch, Multifunctional, Time Counter, Industrial, Electromagnetic Counter, Kitchen, Summation Meter, Universal Counter Type: Counter Waterproof Grade: IP68 Resolution: 0.1hrs /30 Rpms Voltage: 6V-270V Display Range: 0-99999.9 Timing Precision: +/- 0.01 Temperature Range: -20