Best Large Screen GPS Unit
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If you’re searching for the best large screen GPS unit in 2025, two models dominate the landscape: the Garmin Montana series and the TwoNav Terra.
At Outdoor GPS Shop, we’ve tested both extensively—and here’s everything you need to know to make the right choice.
What Makes a “Large Screen GPS” the Best?
When we say “large screen,” we’re talking about GPS units with displays big enough to provide a clear view of your route, your surroundings, and your data—all without constant zooming and fiddling. This matters whether you're walking, trail riding, or navigating by vehicle.
Garmin Montana 710 / 710i / 760i – A Premium Large-Screen Experience
The Garmin Montana series is a mainstay in the world of outdoor GPS, offering a substantial 5" glove-friendly touchscreen that's easy to use in any weather—even in full rain or while wearing thick gloves.
Key Features:
- Massive 5” Touchscreen – With shortcut icons and intuitive navigation.
- Glove-Friendly & Rainproof – Still responsive even in harsh weather.
- 24-Hour Battery Life – Enhanced from previous models.
- Multi-GNSS Support – GPS + Galileo (710i/760i) or GPS + Glonass (710).
- Durability – IPX7 waterproofing and MIL-STD-810 ruggedness.
- Optional Ordnance Survey Mapping – For detailed navigation across Great Britain. What map options are available for an Outdoor GPS unit?
What’s the Difference Between the Models?
| Model | Satellite Comms | Road Navigation (City Navigator) | Camera | Price (approx.) |
|---|---|---|---|---|
| Montana 710 | No | No | No | £550.00 (with no OS maps) |
| Montana 710i | Yes (inReach) | Yes | No | £700.00 (with no OS maps) |
| Montana 760i | Yes (inReach) | Yes | Yes (8MP) | £750.00 (with no OS maps) |
Note: inReach satellite messaging requires a separate subscription.
These are serious units for serious outdoor use—ideal for expedition walkers, off-roaders, and search-and-rescue professionals. The large screen is perfect for Ordnance Survey mapping, making it one of the best GPS units for UK-based walkers.
Top Tip: The Montana is too big for your average pocket, so we recommend a carry case or tethering it to your rucksack.
TwoNav Terra – A Compact, Affordable Large-Screen Alternative
If you want a large screen GPS without the bulk (or the price tag) of the Garmin Montana, the TwoNav Terra offers a sleek, capable alternative.
Key Features:
- 3.7” Gorilla Glass Screen – Big enough for great map visibility, small enough to stay pocket-friendly.
- Slim and Lightweight – Weighs just 198g; dimensions: 80 x 115 x 20mm.
- Built-in Rechargeable Battery – Offers up to 15 hours of use.
- USB-C Charging – Easy to top up wherever you go.
- Zoom Buttons – For precision control, though the touchscreen isn’t glove-friendly.
The Terra has become TwoNav’s best-selling unit, and it’s easy to see why. You get a crisp screen with solid performance, all in a compact body that’s ideal for hillwalking, mountain biking, and general trail use.
However, it’s worth noting: if you do a lot of winter walking with gloves, the Terra’s touchscreen may frustrate. You’ll need to remove gloves to operate it.
Final Thoughts: Which is the Best Large Screen GPS Unit?
It all comes down to how—and where—you use your GPS.
| Feature | Garmin Montana Series | TwoNav Terra |
|---|---|---|
| Screen Size | 5" | 3.7" |
| Glove Friendly | ✅ Yes | ❌ No |
| Battery Life | 24 hrs | 15 hrs |
| Weight | 410g | 198g |
| Mapping Support | OS + TopoActive | OS-compatible |
| Satellite Comms | 710i & 760i only | ❌ No |
| Best For | Expedition use, off-grid adventures | Day hikes, bike rides, casual walkers |
If you’re after the ultimate navigation tool with all the bells and whistles, go for a Garmin Montana. If you want a lighter, simpler unit that still gives you a great visual experience without the extra weight or cost, the TwoNav Terra is a brilliant choice.
Explore Our Range
At Outdoor GPS Shop, we stock both:
We keep everything in stock for next working day delivery, and offer the best prices online for both top-end and budget-friendly large screen GPS units.
