- monitors the operation of your machine - good for finding and reviewing service intervals for oil changes, spark plugs, etc. - easy installation by gluing or fixing with the included mounting kit - waterproof - suitable for most 2T and 4T internal combustion engines - does not require battery connection - suitable for ATVs, motorcycles, snowmobiles, boats, etc. - dimensions L x H x th. = 5.2 x 3.5 x 1.4 cm