The first thing I noticed was how lightweight it was, weighing in at 4.8 ounces, making it the lightest digital compass on the market. I pressed the on button, and up pop the biggest digits I’ve seen on this size compass—29.8 mm high (just over an inch high). I’ve since used it on an Etchells and an RS Aero, and I suspect most of the boats around me could read it just as well as I could. Mast-mounted on a larger sportboat, the number can be easily read from the helm. It would certainly be no problem reading it from a trapeze wire.
I also found the compass display easy to read, regardless of bright daylight or polarized sunglasses. According to Charles Swanson, from Velocitek, this visibility is a function of the materials used in the lenses. “The Prism has a pair of cut acrylic lenses, which are then over-molded into the outer white housing. Some lenses are a polycarbonate front housing, which is one of the most durable plastics out there, but can produce a kind of oily or rainbow pattern, which might be especially evident when viewed with polarized sunglasses.”