Garmin Fishfinder 300C and 400C

The versatile Fishfinder 400C has a super bright, high resolution 10 cm display and is great for finding fish in both freshwater and saltwater.

Use in Freshwater and Saltwater
The 400C is available with a choice of dual beam or dual frequency transducers, so it’s readily adaptable for both freshwater and saltwater fishing. The 400 watt (RMS) dual beam version offers a wide fish-finding cone and reaches depths of 900 feet. With the 500 watt (RMS) dual frequency transducer, you can reach a depth of 1,500 feet.


Connect with CANet®
Fishfinder 400C features a crisp, ultra-bright 10 cm QVGA colour display, plus UltraScroll™ for screen updates at live-action speeds. It's also CANet-compatible, so you can share sonar information with plotters located elsewhere in your boat.

Product manual
Product info from Garmin

The Fishfinder 300C colour sounder represents excellent value for recreational anglers who fish in coastal waters and freshwater lakes.
See Fish in Bright Color
The 300C has a super-bright, high-resolution 3.5-inch QVGA colour display with an easy-to-use menu, plus UltraScroll™ for detailed screen updates at fast speeds. This fishfinder comes with a Dual Beam transducer, which provides excellent coverage in shallow waters.
Benefit from High Performance Sonar
The Fishfinder 300C features the high-performance sonar receiver found in most of the Garmin marine line-up.
Other features:
o Power output: 150 watts (RMS) 1200 watts (peak to peak)
o Auto Gain setting adjusts sonar sensitivity automatically
o See-Thru® technology shows weak and strong returns simultaneously
o Round flasher display mode
o Whiteline shows you how thick the bottom is
o 2X and 4X automatic and manual zoom
o Battery voltage indicator
o Single NMEA-0183 output
o Optional paddlewheel transducer for boat speed
Physical & Performance:
Unit dimensions, WxHxD: 11.4 x 11.4 x 6.1 cm (4.5" x 4.5" x 2.4")
Display size, WxH: 5.3 x 7.1 cm, 8.9 cm diagonal (2.1" x 2.8", 3.5" diagonal)
Display resolution, WxH: 240 x 320 pixels
Display type: QVGA
Weight: 272 g (9.6 oz)
Waterproof: yes (IPX7)
Features:
CANet® compatible: no
Audible alarms: yes
Dual-frequency sonar capable: no
Dual-beam sonar capable : yes
Split-screen zoom: yes
Ultrascroll™ (displays fish targets at higher boat speeds): yes
See-thru® technology (exposes fish hidden in cover): yes
Fish Symbol ID (helps identify fish targets): yes
AutoGain Technology (minimizes clutter, maximizes targets): yes
Whiteline (indicates hard or soft bottom): yes
Adjustable depth line (measures depth of underwater objects): yes
A-scope (real time display of fish passing through transducer beam): no
Bottom lock (shows return from the bottom up): yes
Water temperature log and graph: yes
Water temperature sensor included: yes
Water speed capable (displays speed on water): yes
Other:
Frequency: 80/200 kHz (dual beam)
Transmit power: Dual Beam, 150 W (RMS), 1,200 Watts (peak to peak)
Voltage range: 10-20 VDC
Maximum depth: 900 ft (dual beam)
Cone angle: 45° or 15° (dual beam)