The Garmin GSD 21 Remote Sounder, CANet, 500w, Dual Frequency 50kHz/200kHz 010-00502-00 sold by us is an 100% Genuine Garmin Digital Navigation product that comes with a Garmin manufacturer's warranty. Garmin GSD 21 Remote Sounder, CANet, 500w, Dual Frequency 50kHz/200kHz 010-00502-00 will fulfill all of your specific needs as Garmin products are trusted and considered to be the best GPS navigation systems all around the world. Buying a Garmin GSD 21 Remote Sounder, CANet, 500w, Dual Frequency 50kHz/200kHz 010-00502-00 from us means getting the best price and purchasing from a trusted source - we're an Authorized Garmin Dealer for all Garmin handheld, marine, and auto GPS receivers as well as running and cycling GPS watches, fishfinders, radios, and hundreds of Garmin GPS Accessories, software and maps.

The GSD 21 analog sounder adds detailed sonar data to your compatible Garmin chartplotter.

Connect with CANet™

This black-box sounder connects directly to your chartplotter with a serial cable. To take advantage of UltraScroll™, which provides lightning-fast refresh rates, connect the GSD 21 to your chartplotter with CANet, Garmin's 1-megabit proprietary network.

Get Great Shallow and Deep-Water Performance

The high-dynamic range sounder provides exceptional performance in water as shallow as one foot to depths as great as 1,500 feet. The GSD 21 can connect to dual-frequency transducer (50/200 kHz) for deep-water performance and 500 watts of transmit power, or a dual-beamwidth transducer (narrow/wide) for operation in shallow freshwater as well as deep water and a transmit power of 400 watts.

GSD 21: Puts eyes in the bottom of your boat

Please note: This product does not include a transducer. Garmin offers a complete selection of transducers that you can purchase separately as accessories.

Garmin GSD 21 Remote Sounder, CANet, 500w, Dual Frequency 50kHz/200kHz 010-00502-00 Digital Navigation Package Contents:

• GSD 21
• CANet cable
• Power/data cable
• Installation instructions

While offering a great value for professionals, athletes and hobbyists alike, all of our our Garmin Digital Navigation units are reliable and dependable Digital Navigation. We guarantee that you will get the best deal when buying from us. Our deeply discounted pricing and our quick shipping cannot be matched by anyone. We know that we offer the best deal and we offer only authenticGarmin Digital Navigation, so you can be sure that your purchase of genuine Digital Navigation manufactured by Garmin is covered by a full warranty and our own 100% Satisfaction Guarantee. OpticsPlanet is your leading online distributor for Garmin Digital Navigation, and we'll try to make it as easy as possible to find the right Garmin product for you! In addition to our detailed product descriptions from Garmin.com, we have created a Garmin reviews section on our site. Please read Garmin GPS reviews by our customers who have purchased our discount Garmin GPS systems and compare them to other GPS reviews, read and post in our online GPS discussion forum section and feel free to contact us for all your essential navigation needs!

Other than Garmin GSD 21 Remote Sounder, CANet, 500w, Dual Frequency 50kHz/200kHz 010-00502-00, we sell a full and complete line of Digital Navigation as well as many other GPS Navigation devices by Garmin. Additionally, a comprehensive selection of Garmin accessories is available for all your research and hobby needs.

You can see a wide-ranging selection of Garmin Digital Navigation at our Garmin page. For an ever larger selection of Digital Navigation please visit our Digital Navigation store section.

On the Water Marine Networking Garmin GSD 21 Remote Sounder, CANet, 500w, Dual Frequency 50kHz/200kHz 010-00502-00 753759052232