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Garmin GPSMAP 620

Product Code: GAR620

Garmin GPSMAP 620 is as much at home on the water (sea) as it is on land (roads). Featuring a 5.2-inch touchscreen and waterproof to IPX7 standards, the GPSMAP 620 includes a worldwide base map.

The units memory enables you to store up to 1,500 marine waypoints and 1,000 automotive waypoints. You can also store 50 marine routes and 10 automotive routes.

Additional mapping is also available on SD card to further enhance the units functionality. Maps available include Garmin BlueChart (marine cartography) and City Navigator (road maps), please scroll down the page for further information.



Garmin GPSMAP 620 has been discontinued.

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Released in 2017, the replacement and equalivent model to the Garmin GPSMAP 620 is the Garmin GPSMAP 276Cx.

The Garmin GPSMAP 620 marine GPS chartplottter/navigator has been designed to be used for both on the water and on the road. Modelled around the mutil-award winning Garmin nuvi sat nav series, the GPSMAP 620 features a 5.3-inch WVGA touchscreen display, is waterproof to IPX7 standards and has a high-sensitivity GPS receiver.

The GPSMAP 620 is preloaded with a worldwide basemap as standard. However with optional BlueChart g3 or g3 Vision mapping you can get fishing charts, tide and current data, marine services and coastal roads. The Garmin GPSMAP 620 is NMEA compliant so you can add it to your existing marine network.

There is a range of accessories for the Garmin GPSMAP 620 including marine mounts and car mounts. The mounts make the device easy to plug and play when using between a car and a boat.

The Garmin GPSMAP 620 has two different modes, these are marine mode and automotive mode. When the unit is switched on a symbol appears on the screen depicting which mode is currently selected.

When marine mode is selected and you are using BlueChart g3 charts you can benefit from the 3D MarinerEye and FishEye which show views above and below the waterline respectively. There is also an Auto Guidance feature that helps guide you around hazards along your route.

When the Garmin GPSMAP 620 is in automotive mode and you are using a City Navigator NT SD card you get turn-by-turn directions on the road and it even speaks street names. Program in your route and the GPSMAP 620 will find the quickest, most efficient route. The GPSMAP 620 features custom points of interest and proximity alerts to be told about places you may want to stop at in the road ahead.

Want to flush mount the GPSMAP 620 on your boat? You need to buy the GPSMAP 620 with Marine Flush Mount Kit. This is ideal for mariners looking for a sleeker installation.

3-D view of the surrounding area both above and below the waterline.

You can also get additional marine charts for the GPSMAP 620. These are BlueChart g3, which are available on SD/microSD Cards. The g3 maps feature marine cartography, tidal stations, currents, depth contours, IALA symbols, 3-D map perspective "over the bow" fishing charts and more. The g3 charts include the same as the BlueChart g3 but also include high-resolution satellite imagery, above and below the waterline 3-D perspectives, auto guidance technology, aerial photography of ports, harbours, marinas and waterways and coastal roads, etc. Garmin BlueCharts available to buy from ActiveGPS include: English Channel, Irish and Celtic Sea and Aegean Sea and Sea of Marmara among many other areas and regions. View all of the Garmin BlueChart g3 regular titles.

Garmin GPSMAP 620 Features

‣Ultra bright 5.2-inch WVGA touchscreen display
‣Preloaded worldwide basemap
‣Easy-to-use touchscreen display
‣High sensitivity GPS receiver
‣Waterproof to IPX7
‣NMEA 0183 capable for support with AIS receivers
‣Two NMEA 0183 outputs
‣DSC and AIS support (with 38.4K baud serial)
‣Intelligent mount - unit recognises whether it is marine or automotive use
‣Text-to-speech automotive function annouces road and place names
‣Turn-by-turn road directions with voice guidance (requires maps)
‣Enhance marine navigation with optional BlueChart g3 charts
‣Configure for automotive use with optional automotive mount and City Navigator NT street maps
‣Rechargeable li-ion battery
‣Portable and waterproof for easy transfer between boat and vehicle
‣1 Year manufacturers guarantee.


The Garmin GPSMAP 620 includes a marine mount with power/data cable. An optional automotive mount with vehicle power cable (with built in speaker) is also available when using the Garmin GPSMAP 620 on the road.

Map Coverage

Garmin GPSMAP 620 is preloaded with a worldwide basemap.

To really bring the Garmin GPSMAP 620 to life - we recommend purchasing either Garmin BlueChart g3 maps titles (for sea) and/or Garmin City Navigator NT maps titles (for road). Read more information about Garmin g3 marine Bluecharts.

What's in the box? (when purchased from

‣Garmin GPSMAP 620
‣Preloaded worldwide satellite basemap
‣Marine Mount with Power/Data Cable
‣Lithium-ion Battery Pack
‣USB Cable
‣Protective Cover
‣Owner's Manual
‣Quick Reference Guide
‣Installtion guide

Garmin GPSMAP 620 Accessories

Looking for Garmin GPSMAP 620 accessories? Accessories available to purchase include swivel mounting bracket and mini USB cable.

View all Garmin GPSMAP 620 accessories

Garmin GPSMAP 620 Maps

Add Garmin BlueChart g3 marine charts to your Garmin GPSMAP 620, view the different Garmin g3 Bluecharts you can buy from ActiveGPS.

Garmin GPSMAP 620 Technical Specification

‣Technology: GPS
‣Display: 5.2-inch WVGA touchscreen display (800 x 480 pixels)
‣Battery: User replaceable, rechargeable lithium-ion up to 9 hours (depending on use)
‣Waypoints/favourites/locations: 1,500 (marine mode); 1,000 (automotive mode)
‣Routes: 50 (marine mode); 10 (automotive mode)
‣Track Log: 10,000 points, 20 saved tracks (marine mode); 10,000 points, no saved tracks (automotive mode)
‣Basemap: Worldwide
‣Built-in memory: Internal solid state
‣SD card slot: Yes
‣Garmin radar compatible: No
‣Garmin sonar compatible: No
‣Waterproof: Yes, IPX7
‣Installation: Plug and play
‣Dimensions: Width - 151mm, Height - 102.5mm, Depth - 47.3mm
‣Weight: 490.4g
‣Guarantee: 1-year
Garmin GPSMAP 620 manual

Why buy from us?

We are official Authorised Internet Retailers for Garmin. We sell genuine Garmin products, accessories and maps. We purchase from assigned Garmin UK distributors. We do not buy on the grey market and we do not sell counterfeit products. You can rest assured that by purchasing from ActiveGPS you will receive the full support of Garmin.

Page updated: 15th March 2024

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