The Prism is a stripped down racing compass. The Prism provides unprecedented accuracy, coupled with a massive display, in a compact package. At a mere 137 g (4.8 oz) it is the world's lightest racing compass. The Prism’s sunlight-readable, high-contrast LCD screen features 29.8mm (1.1”) tall digits in a font that’s optimized for readability. This means that if your boat’s under 40ft long you’ll be able to mount the Prism on your mast and read it easily from anywhere in the cockpit, even if you don’t have perfect vision. With 250° of visibility the Prism’s LCDs can be easily read from the helm to the trapeze wire.