The SeaFinder 640c provides 50/200 kHz dual-frequency operation to give you the power for saltwater and Great Lakes
operation! The SeaFinder also includes water temp/trolling speed/distance readings!
Display:
Ultra-bright, 5" (12.7 cm) diagonal
screen
256-color, active matrix TFT LCD
High-definition 640Vx480H resolution
Fluorescent cold-cathode backlit screen and keypad
Unique
Resize Window to adjust split-screen display
Overlay Data feature displays select digital readings over the sonar graph
Sonar:
FishMark
640c has depth capability to 800 ft* (244 m) with 1500 watts of peak-to-peak power
SeaFinder 640c has depth capability to 1500 ft*
(457 m) with 4000 watts of peak-to-peak power
FishMark 640c comes with high-performance, low-profile 200 kHz Skimmer® transducer with
built-in temp sensor delivers up to 60º of fish detection area with high sensitivity
SeaFinder 640c comes with high-performance, low-profile
50/200 kHz Skimmer® dual-frequency transducer with built-in temp sensor delivers an extra wide angle of fish detection area with high
sensitivity
SP-U transom-mount sensor included with SeaFinder 640c for precise trolling speed/distance log readings ---- this sensor
can be added as an option to the FishMark 640c
Adjustable ping speed with automatic HyperScroll™ to display fish targets at higher
boat speeds
Choice of six color display modes to match outdoor light conditions, and to help reveal fish hidden in underwater cover
FasTrack™ vertical bar flasher displays real-time sonar returns and relative strength of each target
Advanced Signal Processing (ASP™)
automatically adjusts your settings for the best sonar picture
COLORLINE™ separates fish from nearby structure and bottom, and helps
define bottom composition and hardness
Advanced Fish I.D.™ shows underwater targets in different sizes of fish symbols
FishTrack™
displays target depth readings above fish symbols
Surface water temperature readings come from a built-in temp sensor in the transducer
Zoom with zoom bottom tracking
Selective on/off sonar alarms: Shallow, Deep, Fish and Zone
Performance:
Instant screen updates during
depth range changes for uninterrupted viewing
Internal back-up memory for key sonar settings
Rugged, reliable, completely sealed and
waterproof casing, even for use in harsh saltwater environments
