The GP1650DF/NT's sensitive GPS receiver gives accurate boat speed, heading and position information. For an even higher level of accuracy, the GP1650DF/NT has an integral DGPS. And, if that isn't enough, the unit also features a dual-frequency (50/200 kHz) 600 Watt (RMS) 2400 P-P echo sounders that detect fish and provide detailed bottom information.
The unit accepts C-MapNT
Fish finder Features
Transducer Plug on back of unit