Keep track of your outboard motor or boat's service life with hour meter - reliable, easy to install, and provides high accuracy readings up to 99,999.9 hours. Digital hour meter is perfect for small engines, , and skid steers - with low power consumption, automatic roll over, and a completely sealed design for reliable performance. Monitor your engine's maintenance needs with mechanical hour meter, which works on DC 10-80 volts and never loses count. 12 volt hour meter is perfect RV generators, equipment, and boats - with easy installation, dust-proof and damp-proof design. Equip your marine engine with hour meter, featuring high accuracy, automatic roll over, and a counter that can accurately record and display up to 99,999.9 hours of service life. Colour:Black Material:plastic Different batches may have different appearance, which does not affect use. Package Contents: 1x Hour Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.