Just need some feedback from any-one that has these fishfinders
Or anyone that has a Northstar/Navman Fishfinder
Looking at Explorer 457 info below
Display Size 5 in \ 127 mm Display Resolution 640 x 480 (H x W) Display Type 256 Color TFT LCD Backlighting Color White Backlighting Levels 16 Resize Display Window Yes Sonar Overlay Data Yes Multilanguage Display Yes Split Screen Presentation Yes Languages Supported 13 SONAR / SOUNDER
Sonar Frequency 50 kHz and 200 kHz Transducer Type Various: See transducer selection table Sonar Output Power Max 600 W Sonar Depth Max 2000 ft \ 600 m Sonar Alarms: Fish, Max and Min Depth Yes Depth Alarm Yes Temperature Display Yes Depth Units Yes Fish Detection Yes Sounder On/Off Yes
Specs above look ok 640x480 Display and 600w power