The Fishfinder 120 builds on the highly successful Fishfinder 80 as a feature-rich, affordable sonar device. It has one of the largest and highest-resolution displays of any Fishfinder in its class, providing better separation and contrast for the recreational angler. The Fishfinder 120 allows you to view and change settings without leaving the sonar screen. It also has an internal backup system that automatically saves your settings and an 'uninterrupted operation' feature so your sonar won't stop while you're changing settings. Packaged with the Fishfinder 120 is Garmin's innovative 360-degree swivel mount and quick-release mechanism to increase utility and security. Also included with the unit is a temperature-sensing 200-kHz transducer, which transmits at 800 watts (peak-to-peak) and 100 watts (RMS) to a maximum depth of 600 feet. The patented transducer design allows for mounting on either the transom or trolling motor. Features include: 240 x 128 pixel, 4-level, grayscale FSTN display 3-level adjustable incandescent backlighting for display and keypad 3.3'W x 3.3'H (4.5' diagonal) viewing area 6.1' x 4.9' x 2.6' (WxHxD) unit dimensions Internal memory backup for user settings with power disconnected Graphic whiteline provides clear image of bottom hardness & structure Alarms for shallow water, deep water, battery voltage & fish Adjustable range, gain, zoom & scroll speed Waterproof design to IPX-7 standards (submersible in 3 feet of water for up to 30 minutes) Includes transducer, power cable, swivel-mounting bracket, owner's manual Manufacturer: Garmin Mfg Part#: 010-00315-01 Features 240 x 128 pixel, 4-level, grayscale FSTN display 3-level adjustable incandescent backlighting for display and keypad 3.3'W x 3.3'H (4.5' diagonal) viewing area 6.1' x 4.9' x 2.6' (WxHxD) unit dimensions Internal memory backup for user settings with power disconnected Graphic whiteline provides clear image of bottom hardness & structure Alarms for shallow water, deep water, battery voltage & fish Adjustable range, gain, zoom & scroll speed Waterproof design to IPX-7 standards (submersible in 3 feet of water for up to 30 minutes) Includes transducer, power cable, swivel-mounting bracket, owner's manual