Not sure which GPS unit is the most durable and reliable for your next off-road adventure?

Compare our most popular off-road navigators: Garmin zumo vs. GPSMAP 276Cx vs. Overlander vs. Tread (XL) Overland Edition vs. Montana 700i


zumo 396 LTM-Szumo XT
GPSMAP 276Cx
Overlander
Tread – Base Edition
Tread (XL) – Overland Edition
Montana 700i
Unit Dimensions 4.94″W x 3.38″H x 0.98″D (12.5 x 8.6 x 2.5 cm)5.8”W x 3.5”H x 1”D
(8.8 x 14.8 x 2.4 cm)
7.5″ x 3.7″ x 1.7″
(19.05 x 9.40 x 4.32 cm)
7.84″ W x 4.79″ H x 0.93″ D (19.9 x 12.2 x 2.4 cm)5.8”W x 3.5”H x 1”D (8.8 x 14.8 x 2.4 cm)Tread: 8.1″W x 6.7″H x 1.2″D (20.7 x 16.9 x 3.1 cm)
Tread XL: 9.9″W x 7.8″H x 1.2″D (25.2 x 19.9 x 3.1 cm)
3.6″ x 7.2″ x 1.3″ (9.19 x 18.30 x 3.27 cm)
Display Size 3.7″W x 2.2″H (9.4 x 5.6 cm); 4.3″ diag (10.9 cm)4.8”W x 2.7”H (12.1 x 6.8 cm); 5.5” diag (13.9 cm)5.0″ (127.0 mm) diagonal6.0″ W x 3.5″ H (15.2 x 8.9 cm); 6.95″ (17.7 cm)4.8”W x 2.7”H (12.1 x 6.8 cm); 5.5” diagonal (13.9 cm)Tread: 6.8″W x 4.2″H (10.8 cm x 17.2 mm); 8″ diagonal (20.3 cm)
Tread XL: 8.5″W x 5.3″H (21.7 cm x 13.6 cm); 10.1″ diagonal (25.7 cm)
2.55″W x 4.25″H (6.48 x 10.80 cm); 5″ diag (12.70 cm)
Display Resolution 480 x 272 pixels1280 x 720 pixels800 x 480 pixels1024 x 600 pixels1280 x 720 pixels1280 x 800 pixels480 x 800 pixels
Display Type WQVGA color TFT with white backlightmulti-touch, glass, high brightness HD color TFT with white backlightbright, sunlight readable WVGA displaymulti-touch, glass, WSVGA color TFT with white backlightmulti-touch, glass, high brightness HD color TFT with white backlightmulti-touch, glass, high brightness HD color TFT with white backlightWVGA transflective, dual orientation, touchscreen
Glove-friendly touchscreen
Dual-orientation Display
Weight8.5 ounces (241.1 g)9.2 ounces (262 g)15.9 oz (450 g) with included rechargeable pack; 14.6 oz (415 g) with AA batteries (not included)15.4 oz (437 g)9.2 oz (262 g)Tread: 22.8 oz (646 g)
Tread XL: 32.8 oz (930 g)
14.5 oz (410 g) with included lithium-ion battery pack
Battery rechargeable lithium-ionrechargeable lithium-ionrechargeable lithium-ion (included) or 3 AA batteries (not included); NiMH or Lithium recommendedrechargeable lithium-ionrechargeable lithium-ionrechargeable lithium-ionrechargeable lithium-ion
Battery Life up to 4 hoursup to 6 hours (up to 3.5 hours at 100% backlight)up to 16 hours (lithium-ion); up to 8 hours (AA batteries)up to 3 hoursup to 6 hours (up to 3.5 hours at 100% backlight)Up to 6 hours at 50% backlight
Up to 1 hour at 100% backlight
GPS Mode: up to 18 hours
GPS Mode, 10 min Tracking: up to 18 hours
Expedition Mode: up to 330 hours 
Expedition Mode, 30 min Tracking: up to 300 hours
Headphone Jack/Audio Line-out
Drop Rating MIL-STD-810MIL-STD-810MIL-STD-810MIL-STD-810MIL-STD-810  (thermal, shock, water, vibe)
Dust Rating IP5XIP6X
Waterproof ✅ (IPX7)✅ (IPX7)✅ (IPX7)✅ (IPX7)✅ (IPX7)✅ (IPX7)
GPS/GLONASS/GalileoGPSGPS/GLONASS/GalileoGPS/GLONASSGPS/GLONASS/GalileoGPS/GalileoGPS/GalileoGPS/Galileo
10 Hz multi-GNSS positioning
Memory/History 32 GB8 GB (6 GB available to use)64 GB32 GB64 GB16 GB (user space varies based on included mapping)
WiFi
Bluetooth✅ (works with BLUETOOTH®-compatible helmet, headset or smartphone (sold separately))✅ (works with Bluetooth®-compatible helmet, headset or smartphone; BLE capable)✅ (works with BLUETOOTH-compatible helmet, headset or smartphone; BLE capable)✅ (works with BLUETOOTH-compatible helmet, headset or smartphone; BLE capable)
ANT+
Active Weather
Magnetic Mountlocking magnet-assisted mount
Tube mount (1.5″ – 2.375″)
1″Ball Adapter with AMPS Plate
1.5″ ball adapter with AMPS plate
Preloaded Maps ✅ (City Navigator North America)✅ (City Navigator North America, Topographic Maps of North and Central America)✅  (TOPO maps for North and South America)✅ (City Navigator North America, Topographic Maps of North and Central America, US public land boundaries, private land parcel maps, USFS Roads and Trails, including motor-vehicle-use-maps for motorcycle, ATV, SXS and full-size 4×4)✅ (City Navigator North America, Topographic Maps of North and Central America, US public land boundaries, private land parcel maps, USFS Roads and Trails, including motor-vehicle-use-maps for motorcycle, ATV, SXS and full-size 4×4)✅ TopoActive for U.S., Canada; City Navigator Maps, North America; Federal Public Lands Map, US only
Includes Lifetime Map Updates ✅ (with Garmin Tread app)✅ (with Garmin Tread app)
Downloadable Satellite Imagery ✅ (Birdseye)✅ (U.S. only)✅ (Birdseye)✅ (Birdseye)✅ (Birdseye)
Downloadable USGS Quad Sheets
3-D Terrain View
3-D Building View
Curvy Roads Routing
Ability to Add Maps
Round Trip
Track Support
Custom Map Support ✅ (500 custom map tiles)
TOPO Map Support
Accepts Data Cards microSD™ card (not included)microSD™ card (not included)microSD™ card (not included)✅ (256 GB max microSD™ card)✅ (256 GB max microSD™ card)✅ (32 GB max microSD™ card)
Waypoints 10,00010,000
Routes 250250, 250 points per route; 50 points auto routing
Track Log 20,000 points, 250 saved tracks20000 points, 250 saved gpx tracks, 300 saved fit activities
Map Segments 15,00015,000
Voice Prompts ✅ (with optional automotive speaker mount)✅ (with optional automotive speaker mount)
Speaks Street Names ✅ (with optional City Navigator map)✅ (with optional automotive speaker mount)
Voice-Activated Navigation (Operate Device with Spoken Commands)
Garmin Real Directions Landmark Guidance
Point-to-Point Navigation
Navigate-a-Track Navigation
Tire Pressure Monitor System
TracBack
Skip Waypoints
Route Shaping through preferred cities/streets
Service history log
Traffic compatible ✅ (with Smartphone Link app)✅ (with Garmin Drive app)✅ (with optional traffic cable)✅ (with Garmin Tread app)✅ (with Garmin Tread app)
Lifetime Traffic Updates ✅ (with Smartphone Link app)
Lane Assist
Junction View (Displays Junction Signs)
Millions of Foursquare Points of Interest ✅ (with optional City Navigator map)
TripAdvisor ratings for Travel POIs
Garmin Adventurous Routing
Automatic Incident Detection
Group Route Sharing (GPX Files)
Auto Sort Multiple Destinations
Route Avoidance
Helmet Law Notifications (US/CAN)
Planned & Dynamic Fuel Stops
Speed Limit Indicator (displays speed limit for most major roads in the U.S. and Europe)✅ (with optional City Navigator map)
Rider Alert Warnings for Sharp curves, state helmet laws, speed cameras and more
Driver alerts for sharp curves, school zones, red light and speed camera warnings and more ✅ (with optional City Navigator map)
Smart Notifications Via App
Live Services Available Via App
LiveTrack via Smartphone Link App
Backup Camera Compatible ✅ (BC 35)✅  (BC™ 40 or BC™ 50)✅ (BC™ 50)
Pair with Compatible inReach Devices
Built-in inReach® Technology (requires active subscription; subject to regulations or prohibitions in some jurisdictions)
Compatible with external inReach® satellite antenna
Where Am I?
Exit Services
Custom POI’s
MP3 Player
Control Music and Media from Smartphone or MP3 Player
Hunt/Fish Calendar
Sun and moon Information
Tide Tables
Barometric Altimeter
Compass ✅ (tilt-compensated 3-axis)
XERO™ Locations
Specialized RV Routing
RV Parks & Services Directory
Road Elevations
State Border Notices- RV
Sunrise/Sunset Times – RV
Mile Marker Info- RV
iOverlander Points of Interest
Ultimate Public Campgrounds
Pitch and Roll Gauges
Pair with Garmin PowerSwitch
Compatible with Group Ride Radio
Compatible with Garmin Explore for Waypoints, Tracks Route and Activities
Garmin Connect Compatibile (online community where you analyze, catagorize and share data)

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