Color Screen Boat Fish Finder FF688A/B with Portable Base：
1) Display type: 3.5" 18 bit TFT V320xH240 with white LED frontlight
2) Superb viewing in direct at sun
3) Multi-language menu (English; Russian; French; Chinese; Japanese; Finnish; Polish; German; Italian; Spanish; Dutch; Korean; Swedish; Greek; Danish; Portuguese; Czech)
4) Depth reading from 2.0 to 1000ft (300 meters) in 1/10th precision
5) 100-level sensitivity setting and multi levels depth range
6) Auto zoom bottom tracking and quick manual zoom
7) “Stop chart” at any time
8) Big/small fish identification and fish depth indicator
9) User selectable sonar chart mode
10) Kell offset
11) Audible fish and depth alarm, depth alarm 3-99ft
12) 200KHz / 83KHz duel beam sonar frequency
13) 8 "AA" batteries or DC12v power supply
14) Transducer(Selectable) A: Side Hull Transform Mount or Float (25ft cable)
B: Free Scan Transducer and can be used on ice (6.5ft cable)
15) Water proof connector between main unit and transducer