Graphic sonar NORTHSTAR 457 FISHFINDER 5'

High resolution: 640 x 480 pixels
Speed/temperature sensor included (ESB453 only).
Alarms: battery, shallow, depth, water temperature and rate of change.
Dual frequency: 200 (15 degrees) and 50 KHz (45 degrees) and high ping rate up to 50 pings/second.
6 display modes including: zoom, standard/bottom lock, data, fuel (optional sensor required).
Output power: 600 watts RMS.
Power Consumption: 12.4w
Waterproof: IPX7.
Useful depth: 400 m
Voltage: 12-24v DC.
The Mercury SmartCraft interface provides analog-style engine gauges (requires GPF870 or GPF875 option).