Garmin GPSMAP 421s 4-Inch Waterproof Marine GPS and Chartplotter with Sounder

Customer Reviews Garmin GPSMAP 421s 4-Inch Waterproof Marine GPS and Chartplotter with Sounder I got my monies worth the first day I had this product on my boat. I was salmon fishing about 4 miles off the coast of Oregon when the fog rolled in and visibility went to about 100 feet. I didnt know much about the product then but knew enough to use the tracking feature from the dock. I was able to follow my track back to the harbor entrance (only seeing the entrance at about 100 feet) Without this product I might still be floating out there somewhere. I'm still reading and trying to make use of all of the features, I think I should have purchased a 441s but othere then that I'm very happy with this purchase

Product Description Garmin GPSMAP 421s 4-Inch Waterproof Marine GPS and Chartplotter with Sounder Edition: Base Model, Fishfinder & Transducer GPSMAP 421S Chartplotter Combo - Includes Dual Frequency TransducerFeatures an ultra-bright 4" QVGA display along with an improved high-speed digital design for faster map drawing and panning speeds. Plus, these waterproof units have a high-sensitivity internal GPS receiver, so mariners will always know their position at sea. They are ready to go with a built-in, satellite-enhanced worldwide basemap and Garmin's proven easy-to-use interface designed to help you navigate the open waters with ease. This model is compatible with various NMEA 2000 components, inculuding Garmin's full lineup of NMEA 2000 marine sensors and autopilots. Features and Specifications: Ultra-bright 4" diagonal QVGA display, 240 x 320 pixels - over 800 nits of brightness NMEA 2000 certified for seamless integration with the Garmin marine lineup Preloaded worldwide marine basemap Compatible with GXM 51 for XM Satellite Radio and XM WX Satellite Weather High-speed processor for fast screen redraws and smooth panning Streamlined user interface makes it simple to select modes and features Single SD memory card slot for BlueChart g2 Vision cards, as well as saving waypoints, routes and tracks to a SD card Optional BlueChart g2 Vision cards provide marine chart detail and enhanced navigation features like Auto Guidance, satellite imagery, 3-D Mariner's Eye View and 3-D Fish Eye View Backlit keypad for easy operation in low light conditions Unit dimensions: 5.0"H x 5.7"W x 2.7"D (12.7cm H x 14.5cm W x 6.9cm D) Power output: 500 watts (RMS) 4000 watts (peak to peak), dual frequency Depth: 1500 feet/500 meters (dual frequency) Use a dual frequency transducer 50 kHz (45 degrees), 200 kHz (10 degrees) for maximum saltwater performance Transom/trolling mount transducer UltraScro

Product Features
Edition: Base Model, Fishfinder & Transducer
• The GPSMAP 421S is a compact chartplotter that features an ultra-bright 4"QVGA color display along with an improved high-speed digital
• 3D views and Auto Guidance technology.

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Garmin GPSMAP 78S 010-00864-01 Marine GPS Navigator and World Wide Chartplotter

This replaces my old GPSMAP 76 which still is a fine machine. The GPSMAP 78S has a more sensitive receiver (it got a cold start fix in 30 seconds in my living room), the menus are intuitive (easy to use) and the color display is easy to see in full sunlight (no back light) and in subdued light with the back light switched on. The built-in compass 3 axis calibration took less than a minute and is easily repeated for each new environment (on board ship, in the car, or in the woods). In short the GPSMAP 78S fulfills my high expectations for quality from Garmin.

I have been using my Garmin GPSMAP 78 for a month now. Easy to use if you download the manual from Garmin.I also downloaded Garmin Base Camp free from Garmin. You can edit your tracks on your PC and transfer back to your GPS. I also purchased the power adaptor,mount and case. I use it on my boat in South Louisiana in freshwater canals that all look alike. I also mark all the good fishing spots. This is a must for the weekend fisherman. It also floats!!! The only added improvement would be a touch screen.

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Product Features
• Worldwide shaded relief basemap
• microSD card slot for optional mapping
• 3-Axis compass & barometric altimeter
• Floats, buoyant
• 2.6-inch TFT LCD display
• Worldwide shaded relief basemap; microSD card slot for optional mapping
• Built-in 3-axis electronic compass; Barometric altimeter
• 1.7MB built-in memory

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