Here is some technical info;
Lowrance M68C S/Map Compact GPS Fishfinder with transducer. New in box with all paperwork. This unit comes with all hardware, cables, mounting brackets, transducer, and everything you need to hook this unit up and make it work.

High-brightness 3.5" (8.9cm) diagonal 256-color, 1/4 VGA active matrix TFT transflective LCD
Impressive 320V x 240H pixel resolution
12-parallel channel GPS+WAAS receiver with internal antenna
800 W peak-to-peak power
Depth penetration to 600 feet* (183 m)
Find fish and yourself in dazzling color, at a highly affordable price! Features high-detail hydrographic mapping and an internal GPS+WAAS receiver.
Display Size 3.5 in \ 89 mm
Display Resolution 320 x 240 (H x W)
Display Type 256-color active matrix TFT
Backlighting Screen/Keypad
Backlighting Type White LED
Resize Display Window Yes
Sonar And GPS Overlay Data Yes
Split Screen Presentation Yes
Multilanguage Display Yes
Power Supply 10 - 17 vDC
Compact Color S/Map
Find fish and yourself in dazzling color, at a highly affordable price! Features high-detail hydrographic mapping and an internal GPS+WAAS receiver.
View Points
High-brightness 3.5" (8.9cm) diagonal 256-color, 1/4 VGA active matrix TFT transflective LCD
Impressive 320V x 240H pixel resolution
White LED backlit screen and keypad for night or low-light viewing
Simplified keypad with Menu and Pages keys
Overlay Data feature displays GPS information over sonar screen, and sonar information over GPS screens
Space-saving case design with adjustable tilt, quick-mount/release convenience
Sonar
Depth penetration to 600 feet* (183 m)
True 800 watts peak-to-peak transmit power
Unique full-screen LCD flasher mode with COLORLINE™ displays real-time sonar readings
Other unique sonar features include: HyperScroll™, Advanced Signal Processing (ASP™), Advanced Fish Symbol I.D.™, FishTrack™, and more
2X and 4X zoom, with zoom-bottom-tracking
Auto or manual sensitivity, surface clarity, noise rejection, and depth range controls
Selective on/off shallow, deep, zone, and fish alarms
Low-profile high-performance 12º 200 kHz Skimmer® - with built-in water surface temp sensor - optional sensors for livewell/baitwell temp and speed/distance log readings
Up to 60-degree coverage area using high sensitivity
Operates up to 70 mph (61 kts)
GPS/Mapping
Full 12-parallel channel GPS+WAAS receiver with advanced internal satellite antenna
Special built-in Lowrance high-detail hydrographic mapping of lakes, rivers, Great Lakes, and U.S. coastal waters with nav aids
Mega-memory saves up to 1,000 waypoints, 1,000 event markers, and 100 routes (up to 100 waypoints/route)
100 savable plot trails with up to 10,000 points per trail
42 graphic icons to mark important spots
40 map ranges - 0.02 to 4,000 miles - with easy zoom-in/out control
Off course/arrival/anchor alarms; trip calculator, sun/moon calculator; and Man Overboard features
Shipping will be $14.50 Priority mail flat rate box
Local pick up ok $5 fee for me to meet you somewhere