Features: 1.Rugged, reliable units are ideal for O.E.M and fleet applications. 2.Mechanical hour meter with superior accuracy. 3.Standard working rangers 6-80v. 4.Fully sealed and dust-proof. 5.Fits in existing panel openings for easy installation. 6.Easy-to-read displays with 6 numbers registering up to 99999.9 hours. 7.Protected from potentially damaging transient voltage. 8.Warranty:1 year from the date of deliverying. Optional styling features such as bezels,ranges, customers dials and pointer colors are all available by contaching us for details. Inner packing: each packed in a well protected box or blister package or other customized package.