This USB GPS works with Maptech's Chart Navigator Pro, Chart Navigator Standard Edition, and U.S. Boating Charts With Tides and Currents. Plug it into your USB port and you'll see your real-time position right on your laptop screen.Powered via USB48-channel, waterproof designWAAS & EGNOS enabledNMEA compatibleMagnetic housing for secure positioningPerfect for boat, car or RVOS Compatibility: Windows: XP / Vista / 7 / 8 /10 / MAC: 10.4.11 - 10.6.6 + Linux and Windows CE Package contains one USB GPS sensor with a 5-foot cable, and driver software. 2.08" diameter x 0.75."