Fork Lock Clock, Harley Road King CNC-Machined 6061 T-6 billet aluminum housing. Triple chrome plated for a show quality shine. Clock features stainless Steel case, mineral glass lens, and long life battery installed. Precision clock with Seiko PS-21 quartz movement with luminous hands and hour markers for night time riding Waterproof, shock proof, vibration proof Installs in 5-minutes. It'll take you longer to get it out of the box than it will to install it.