Garmin inReach subscription required
 
Built for the wild: the Garmin GPSMAP H1i Plus combines advanced handheld GPS navigation with full-two-way satellite communication (via inReach Plus), allowing you to send messages, share photos/voice memos, track your position and trigger SOS alerts — all when you’re beyond mobile coverage.
 
Key Features
Built-in satellite communication (inReach Plus) so you can send/receive texts, photos and voice notes even when off-grid. 
Rugged, dual interface: a 3.5″ sunlight-readable colour touchscreen plus physical buttons for use in gloves and harsh conditions. 
Extended battery life: up to approx. 145 hours in GPS mode (when all satellite systems/multi-band are active). 
Preloaded TopoActive maps, WiFi satellite-imagery downloads and support for advanced mapping layers via Outdoor Maps+ (sold separately). 
Rugged design with IP67 rating (dust- and water-resistant), built for tough outdoor and remote environments. 
24/7 SOS support: press the SOS button to send your location and message to Garmin Response, an international emergency-coordination centre. 
Live tracking, route sharing and seamless syncing with the Garmin Explore-app and other Garmin devices. 
 
Specifications
Specification
Details
Display
3.5″ sunlight-readable colour touchscreen + physical buttons. 
Weight
Approx. 290 g (10.2 oz) 
Dimensions
~ 2.6″ × 7.0″ × 1.3″ (6.7 cm × 17.9 cm × 3.3 cm)
Water/Dust Rating
IP67 – protected against dust and water immersion up to 1 m for 30 min. 
Operating Temp.
–20 °C to 60 °C (–4 °F to 140 °F) Garmin
Battery Life
Up to ~145 hrs in full-system mode; further extended with expedition/tracking modes. 
Map Data
Preloaded TopoActive, WiFi-download of satellite imagery, supports Outdoor Maps+. 
Subscription Required
Yes — an active inReach Plus plan is required for satellite messaging, photo/voice sharing and SOS functionality.
 
Who It’s For
Adventurers, mountaineers, trail‐runners and 4×4/overland explorers heading into remote terrain where mobile coverage is unreliable.
Professionals and teams in remote field operations (e.g., forestry, surveying, rescue) needing mapping + global communication.
Anyone who demands a top-end handheld GPS device that offers both robust navigation and off-grid connectivity.
 
What to Consider Before Buying
The satellite messaging, photo, voice and SOS features require a separate subscription (via inReach Plus). Without it you'll have GPS/navigation only.
Optimal satellite performance requires a clear view of sky (tree cover, canyon walls or urban canyons may impact connectivity).
While rugged, this is a premium device — consider if you need the full inReach+ capability vs a simpler GPS model.
Ensure you’re familiar with local laws/regulations regarding satellite communication devices in your operating area (including South Africa).
 
Why Buy From SatComms?
At SatComms we specialise in satellite communications gear and support for South African buyers. Choosing us means:
Expert advice on device, subscription and activation step-by-step.
Local shipping and support (including warranty assistance).
Optional services like our ‘Satellite Phone Annual Health Check’ — keeping your gear ready when you need it most.
 
Q1. What is the Garmin GPSMAP H1i Plus?
It’s a premium handheld GPS navigator equipped with built-in satellite communication via the inReach Plus service — meaning you can send texts, photos and voice messages, track your location live and trigger SOS alerts even when you’re off the grid. GearJunkie+2Garmin+2
Q2. Do I need a subscription to use it?
Yes. To access two-way satellite messaging, photo/voice sharing, tracking and SOS functions you must have an active inReach subscription. Without it, many of the advanced comms features will be disabled. Garmin
Q3. What kind of battery life can I expect?
In typical use with full satellite systems and multi-band mode, Garmin rates battery life of up to around 145 hours. Some sources also note expedition-mode lifespans (much longer) for low-frequency tracking. Stock Titan+1
Q4. Is the device rugged and suitable for tough outdoor use?
Yes. It has an IP67 dust- and water-resistance rating—meaning it can withstand incidental immersion (up to 1 m for 30 minutes) and is built for harsh conditions. Garmin+1
Q5. What mapping and navigation features does it offer?
The H1i Plus comes preloaded with TopoActive maps, supports downloading high-resolution satellite imagery over Wi-Fi, and includes multi-GNSS/multi-band positioning for precise location tracking. GearJunkie
Q6. Can I send photos or voice messages through it?
Yes — one of its standout features is the ability (with an active inReach plan) to share photographs and voice memos via the satellite link, providing more context in remote locations. GearJunkie+1
Q7. What happens when I press the SOS button?
The device sends an interactive SOS message via the inReach network to Garmin Response, a 24/7 staffed emergency coordination centre, which liaises with local rescue services on your behalf. Stock Titan+1
Q8. Is it only useful for adventurers, or could professionals use it too?
Both. While it’s ideal for hikers, mountaineers and off-grid explorers, its robust mapping, communication and tracking capabilities also make it suitable for field professionals, remote work teams, search & rescue, and other high-risk/low-connectivity environments. Outfitter Satellite
Q9. Can I use it in South Africa?
Yes — the satellite communication technology (via the Iridium network for inReach) provides global coverage, meaning you can use its messaging, tracking and SOS features in South Africa and beyond.
Q10. What should I consider before purchasing?
You’ll need a subscription for full functionality.
For best satellite connectivity, you need a clear view of the sky (dense canopy, deep valleys or urban canyons may reduce performance).
It is a premium device with advanced features — ensure you really need photo/voice via satellite + SOS + high-end mapping to justify the investment.
Ensure you understand local regulations regarding satellite communication devices in South Africa or any other country of operation.