Wireless Marine Instrumentation & Systems Wireless and solar powered with integrated lithium batteries that power the unit for life. 100% waterproof and sealed. Designed specifically for sports and keel boats to provide critical tactical race information. Waterproof and shock resistant. Dual display with large digits. Display 104 x 76 (W x H). Gimballed fluxgate compass transducer. Lightweight, only 95g. Heel and pitch angle 30å¡. Calibration at the displays