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- X8-M1 vs S999
Bynav X8-M1 vs Stonex S999
What X8-M1 does better (4) and where S999 wins (3) — every spec side by side.
Dimensions
Size comparison
X8-M1S999
| X8-M1 | S999 | Difference | |
|---|---|---|---|
| Height | 133 mm | 74 mm | +59 mm |
| Width | 33 mm | 139 mm | −106 mm |
| Depth | 30 mm | 139 mm | −109 mm |
| Weight | 104 g | 1,065 g | −961 g |
Drawn to the same scale from the official dimensions (front and side).
Why is X8-M1 better than S999?
- Weight104 g vs 1,065 g10.2×
- Battery life16 h vs 10 h+60%
- Operating temperature (max)70 °C vs 65 °C+8%
- Tracking channels1,500 vs 1,408+7%
Why is S999 better than X8-M1?
- Water protection (IPx)IPx7 vs IPx8+14%
- Battery capacity3,300 mAh vs 13,600 mAh4.1×
- Operating temperature (min)-20 °C vs -40 °C+-50%
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS) | GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS) |
| Satellite systems supported | 6 | 6 |
| Multi-band GNSS (L1 + L5/L2) | Yes | — |
| Frequency bands | L1, L2, L5, E1, E5a, E5b, E6, B1, B2, B3 | — |
| Tracking channels | 1,500 | 1,408 |
| SBAS (WAAS / EGNOS) | Yes | Yes |
| RTK positioning | Yes | — |
| RTK accuracy (horizontal) | 10 mm | — |
| RTK accuracy (vertical) | 15 mm | — |
| Tilt compensation (IMU) | — | Yes |
| Max. tilt angle | — | 60° |
| Correction sources | NTRIP (internet), Cellular modem, SBAS | NTRIP (internet), Cellular modem, L-band / PPP, SBAS |
| Built-in UHF radio | — | No |
| L-band / PPP corrections | — | Yes |
| Maps & navigation | ||
| Internal storage | — | 31 GB |
| Connectivity & safety | ||
| Bluetooth | Yes | Yes |
| Cellular modem (4G / LTE) | Yes | Yes |
| USB-C | Yes | Yes |
| Camera | — | Yes |
| Battery & power | ||
| Battery life | 16 h | 10 h |
| Battery capacity | 3,300 mAh | 13,600 mAh |
| External power input | USB Type-C (5V/1A input) | — |
| Build & durability | ||
| Protection rating | IP67 | IP68 |
| Water protection (IPx) | IPx7 | IPx8 |
| Drop resistance | 1.5 m | — |
| Operating temperature (min) | -20 °C | -40 °C |
| Operating temperature (max) | 70 °C | 65 °C |
| Weight | 104 g | 1,065 g |
| Width | 33 mm | 139 mm |
| Height | 133 mm | 74 mm |
| Depth | 30 mm | 139 mm |
| Housing material | ABS flame-retardant plastic | — |
