"Mount it on your deck. Mount it on your windshield. Mount it on your dash. Here’s a compass that’s just the right size for small boats or sport vehicles. Specifications Boat Style/Size Power/Up to 16 Feet (4.88m) Dial Size/Design 2” (5.08cm)/Direct Read Night Lighting 12V Green Compensators Built-in Warranty 5-Year Approx. Shipping Wt. 5 oz. (142g)"