OPPAMA OPPAMA KOGYO Pulse Engine Tachometer CO., LTD. PET-2000DXR

It can measure 2-stroke 1, 2-cylinder, 4-stroke 2, 4-cylinder, and 1-rev 1-ignition gasoline engines. Measurements can be taken simply by bringing it close to the spark plug cord. Using the included antenna lead, measurements can be taken within a 1.2m range. It is waterproof for everyday use. Maintenance of gasoline engines and checking engine speed when adjusting the engine. Battery life: 20,000 hours