Features: 100% Brand new and high quality! Works on all spark ignition engines by selecting engine type using S1 and S2 buttons One is to be wrapped around a spark plug wire and the other is a ground wire. Wide operating temperature range Show engine rpm and record hours of operation. Large LCD display for easy reading. Inductive design: You just need to tie the cable to the spark plugs. Powered by 1 x CR2450 battery(not included) Simple to install. Specifications: Material: ABS Color: Black Resolution: 0.1HRS / 10RPMs Reading: 9999.9Hrs / 99999RPMs Accuracy: 1 minute or 10 RPM, Quartz Operating temperature: Standard -30C-85C Cable length: Approx. 170cm / 66.9 inch(Includes single shielded wire with two internal leads) Power supply: 1 * CR2450 battery Product Size: 5* 4.5 * 2cm / 1.97 * 1.8 * 0.8 inch LCD Size: 42 x 12mm/1.65 x 0.47 inch Package included: 1 * Tach/Hour Meter with Wire 
