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- i89 vs M900
CHCNAV i89 vs ComNav M900
What i89 does better (2) and where M900 wins (1) — every spec side by side.
Why is i89 better than M900?
- Weight750 g vs 1,000 g+33%
- Tracking channels1,408 vs 1,226+15%
Why is M900 better than i89?
- Operating temperature (max)65 °C vs 75 °C+15%
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, GLONASS, Galileo, BeiDou, QZSS | GPS, GLONASS, Galileo, BeiDou, QZSS |
| Satellite systems supported | 5 | 5 |
| Multi-band GNSS (L1 + L5/L2) | Yes | Yes |
| Frequency bands | L1, L2, L5, E1, E5a, E5b, E6, B1, B2, B3 | L1, L2, E1, E5b, B1, B2 |
| Tracking channels | 1,408 | 1,226 |
| SBAS (WAAS / EGNOS) | Yes | Yes |
| RTK positioning | Yes | Yes |
| RTK accuracy (horizontal) | 8 mm | 8 mm |
| RTK accuracy (vertical) | 15 mm | — |
| Static accuracy (horizontal) | — | 2.5 mm |
| Tilt compensation (IMU) | Yes | — |
| Dual-antenna heading | — | Yes |
| Correction sources | NTRIP (internet), UHF radio, SBAS | NTRIP (internet), UHF radio, Cellular modem, L-band / PPP, SBAS |
| Built-in UHF radio | Yes | Yes |
| L-band / PPP corrections | — | Yes |
| Raw data logging (RINEX) | Yes | Yes |
| Maps & navigation | ||
| Internal storage | 8 GB | 8 GB |
| Connectivity & safety | ||
| Wi-Fi | Yes | Yes |
| Bluetooth | Yes | Yes |
| Cellular modem (4G / LTE) | — | Yes |
| USB-C | Yes | — |
| Camera | Yes | — |
| Battery & power | ||
| Battery life | 16 h | — |
| External power input | 5 V / 2 A | 5-27 VDC |
| Build & durability | ||
| Protection rating | IP68 | IP68 |
| Water protection (IPx) | IPx8 | IPx8 |
| MIL-STD-810 | Yes | — |
| Drop resistance | — | 1 m |
| Operating temperature (min) | -40 °C | -40 °C |
| Operating temperature (max) | 65 °C | 75 °C |
| Weight | 750 g | 1,000 g |
| Width | — | 171 mm |
| Height | — | 56 mm |
| Depth | — | 183 mm |
| Housing material | — | Magnesium-aluminium |
