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- GPSMAP 66i vs GPSMAP 86sci
Garmin GPSMAP 66i vs Garmin GPSMAP 86sci
What GPSMAP 66i does better (1) and where GPSMAP 86sci wins (0) — every spec side by side.
vs
4.6Positioning4.6
5.4Display5.4
6.6Maps & navigation7.5
8.3Connectivity & safety8.3
6.7Battery6.7
7.2Durability5.0
Dimensions
Size comparison
GPSMAP 66iGPSMAP 86sci
| GPSMAP 66i | GPSMAP 86sci | Difference | |
|---|---|---|---|
| Height | 163 mm | 178 mm | −15 mm |
| Width | 62 mm | 68 mm | −6 mm |
| Depth | 35 mm | 44 mm | −9 mm |
| Weight | 230 g | 272 g | −42 g |
Drawn to the same scale from the official dimensions (front and side).
Why is GPSMAP 66i better than GPSMAP 86sci?
- Weight230 g vs 272 g+18%
Why is GPSMAP 86sci better than GPSMAP 66i?
GPSMAP 86sci has no measurable advantages in this pair.
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, Galileo | GPS, Galileo |
| Satellite systems supported | 2 | 2 |
| Multi-band GNSS (L1 + L5/L2) | No | No |
| Raw data logging (RINEX) | Yes | Yes |
| Display | ||
| Screen size | 3″ | 3″ |
| Resolution | 240 × 400 | 240 × 400 |
| Horizontal resolution | 240 px | 240 px |
| Vertical resolution | 400 px | 400 px |
| Pixel density | 155 ppi | 155 ppi |
| Display type | Transflective colour (sunlight-readable) | Transflective colour (sunlight-readable) |
| Maps & navigation | ||
| Preloaded maps | Yes | Yes |
| Map types | Road, Topographic, Satellite imagery | Satellite imagery |
| Turn-by-turn routing | Yes | — |
| Satellite imagery | Yes | Yes |
| Internal storage | 16 GB | 16 GB |
| Memory card slot | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Waypoints | 10,000 | 10,000 |
| Connectivity & safety | ||
| Two-way satellite messaging | Yes | Yes |
| SOS / emergency alert | Yes | Yes |
| Satellite network | Iridium | Iridium |
| Wi-Fi | Yes | Yes |
| Bluetooth | Yes | Yes |
| ANT+ | Yes | Yes |
| Smartphone notifications | Yes | Yes |
| Flashlight | Yes | Yes |
| Battery & power | ||
| Battery life | 35 h | 35 h |
| Power source | Built-in rechargeable | Built-in rechargeable |
| Build & durability | ||
| Protection rating | IPX7 | IPX7 |
| Water protection (IPx) | IPx7 | IPx7 |
| MIL-STD-810 | Yes | Yes |
| Weight | 230 g | 272 g |
| Width | 62 mm | 68 mm |
| Height | 163 mm | 178 mm |
| Depth | 35 mm | 44 mm |
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