This unit is an attractive rectangle panel mount vibration activated hour meter that can be installed anywhere. Specifications include: Time Scale: 6-digits; No External Power Source Required; Size: 1.43" W x .94" H x .61" D; Face Dia.: 2.12" W x 1.25" H; Weight 2 oz.; Internal Lithium Battery 8 years plus non‑replaceable; Vibration Resistant; Accurate; 2 Hole Mounting Flange; and Warranty: 1 year.