fishing tackle 200 KHz/83KHz Duel beam Sonar Frequency Big / Small Fish Identification 1) Display type: 4 levels grayscale LCD V128xH96 with white LED backlight2) Depth reading from 2.0 to 240ft in 1/10th precision3) Bottom contour and water temperature indicator4) 10-level sensitivity setting and multi levels depth range5) Auto zoom bottom tracking and quick manual zoom6) “Stop chart” at any ...