Our Products C750D Imaging Sonar Specification Operating Frequency : 750kHz&1200kHz Range :120m@750kHz; 40m@1200kHz Range Resolution: 4mm@750kHz;2.5mm@1200kHz Angular Resolution : 1°@750kHz;0.6°@1200kHz Depth Rating : 500m Imaging Effect PrawnShorelinePontoon C900 Imaging Sonar Specification Operating Frequency : 900kHz Range :80m(max) Range Resolution: 7.5 mm Angular Resolution : 1° Depth Rating : 300m Imaging Effect PierPoolTyre