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- Foretrex 901 Ballistic Edition vs GPSMAP 66i
Garmin Foretrex 901 Ballistic Edition vs Garmin GPSMAP 66i
What Foretrex 901 Ballistic Edition does better (3) and where GPSMAP 66i wins (1) — every spec side by side.
vs
5.8Positioning4.6
3.9Display5.4
4.0Connectivity & safety8.3
7.6Battery6.7
5.9Durability7.2
Dimensions
Size comparison
Foretrex 901 Ballistic EditionGPSMAP 66i
| Foretrex 901 Ballistic Edition | GPSMAP 66i | Difference | |
|---|---|---|---|
| Height | 48 mm | 163 mm | −115 mm |
| Width | 74 mm | 62 mm | +12 mm |
| Depth | 23 mm | 35 mm | −12 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Foretrex 901 Ballistic Edition better than GPSMAP 66i?
- Battery life100 h vs 35 h2.9×
- Satellite systems supported3 vs 2+50%
- Pixel density182 ppi vs 155 ppi+17%
Why is GPSMAP 66i better than Foretrex 901 Ballistic Edition?
- Screen size2.2″ vs 3″+36%
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, GLONASS, Galileo | GPS, Galileo |
| Satellite systems supported | 3 | 2 |
| Multi-band GNSS (L1 + L5/L2) | No | No |
| Raw data logging (RINEX) | — | Yes |
| Display | ||
| Screen size | 2.2″ | 3″ |
| Resolution | 320 × 240 | 240 × 400 |
| Horizontal resolution | 320 px | 240 px |
| Vertical resolution | 240 px | 400 px |
| Pixel density | 182 ppi | 155 ppi |
| Display type | Transflective colour (sunlight-readable) | Transflective colour (sunlight-readable) |
| Maps & navigation | ||
| Preloaded maps | — | Yes |
| Map types | — | Road, Topographic, Satellite imagery |
| Turn-by-turn routing | — | Yes |
| Satellite imagery | — | Yes |
| Internal storage | — | 16 GB |
| Memory card slot | — | Yes |
| Barometric altimeter | Yes | Yes |
| Waypoints | 500 | 10,000 |
| Connectivity & safety | ||
| Two-way satellite messaging | — | Yes |
| SOS / emergency alert | — | Yes |
| Satellite network | — | Iridium |
| Wi-Fi | — | Yes |
| Bluetooth | Yes | Yes |
| ANT+ | Yes | Yes |
| USB-C | Yes | — |
| Smartphone notifications | Yes | Yes |
| Flashlight | — | Yes |
| Battery & power | ||
| Battery life | 100 h | 35 h |
| Power source | — | Built-in rechargeable |
| Build & durability | ||
| Protection rating | IPX7 | IPX7 |
| Water protection (IPx) | IPx7 | IPx7 |
| MIL-STD-810 | Yes | Yes |
| Weight | — | 230 g |
| Width | 74 mm | 62 mm |
| Height | 48 mm | 163 mm |
| Depth | 23 mm | 35 mm |
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