Levels Grayscale Boat Fish Finder FF668A/B with Portable Base：
1) Display type: 3.5" 16 Levels Grayscale LCD V320xH240 with white LED backlight
2) Multi-language menu (English; Russian; French; Chinese; Japanese; Finnish; Polish; German; Italian; Spanish; Dutch; Korean; Swedish; Greek; Danish; Portuguese; Czech)
3) Depth reading from 2.0 to 1000ft (300 meters) in 1/10th precision
4) 100-level sensitivity setting and multi levels depth range
5) Auto zoom bottom tracking and quick manual zoom
6) “Stop chart” at any time
7) Big/small fish identification and fish depth indicator
8) User selectable sonar chart mode
9) Kell offset
10) Audible fish and depth alarm, depth alarm 3-99ft
11) 200KHz / 83KHz duel beam sonar frequency
12) 8 "AA" batteries or DC12v power supply
13) Transducer(Selectable)
A: Side Hull Transform Mount or Float (25ft cable)
B: Free Scan Transducer and can be used on ice (6.5ft cable)
14) Water proof connector between main unit and transducer