This brass Endurance 085 nautical clock delivers precise timekeeping in a compact, weatherproof design ideal for cabin or cockpit installations. Ultra-hard, maintenance-free brass case: guaranteed not to tarnish, preserving a professional appearance Patented Slide-n-Lock mounting system: secure, screw-free installation with quick removal for time and battery adjustments Beveled glass crystal with O-ring seal: ensures excellent visibility and reliable weatherproof protection Quartz movement with included N battery: dependable, low-maintenance performance Lightweight and space-efficient: 3 3/8" dial, 4 1/8" base, 1 1/2" depth, 0.65 lb Supported by a limited lifetime warranty on finish and movement, this marine clock is a durable timekeeping solution for any vessel.