Know exactly where you are at all times with Rino 530HCx and the precision of high-sensitivity GPS. This waterproof FRS/GMRS radio plus GPS navigator adds a barometric altimeter, electronic compass and NOAA weather radio in addition to the popular features of the Rino 520HCx — 5 watts of transmit power, a microSD card slot, brilliant color display and a high-sensitivity GPS receiver — so you’ll never be lost again.