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  3. i85 vs S599

CHCNAV i85 vs Stonex S599

What i85 does better (5) and where S599 wins (3) — every spec side by side.

CHCNAV i85
CHCNAV · 2025i85
8.2Score
5 advantages
Higher score
vs
Stonex S599
Stonex · 2025S599
6.9Score
3 advantages
7.2Positioning7.4
4.9Maps & navigation4.9
5.9Connectivity & safety5.9
8.2Battery5.4
8.4Durability8.5
Dimensions

Size comparison

i85S599
134 × 8613498 × 4698
i85S599Difference
Height86 mm46 mm+40 mm
Width134 mm98 mm+36 mm
Depth134 mm98 mm+36 mm
Weight800 g385 g+415 g

Drawn to the same scale from the official dimensions (front and side).

Why is i85 better than S599?

  1. Battery life20 h vs 12 h+67%
  2. Built-in UHF radioYes · S599: No
  3. Tracking channels1,892 vs 1,408+34%
  4. Operating temperature (min)-40 °C vs -30 °C+-25%
  5. Operating temperature (max)65 °C vs 60 °C+8%

Why is S599 better than i85?

  1. Weight800 g vs 385 g2.1×
  2. Satellite systems supported5 vs 6+20%
  3. Battery capacity4,900 mAh vs 6,000 mAh+22%
Specifications

Side by side

Satellite positioning
Satellite systemsGPS, GLONASS, Galileo, BeiDou, QZSSGPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS)
Satellite systems supported56
Multi-band GNSS (L1 + L5/L2)Yes—
Frequency bandsL1, L2, L5, E1, E5a, E5b, E6, B1, B2, B3—
Tracking channels1,8921,408
SBAS (WAAS / EGNOS)YesYes
RTK positioningYesYes
RTK accuracy (horizontal)8 mm8 mm
RTK accuracy (vertical)15 mm—
Static accuracy (horizontal)—2.5 mm
Tilt compensation (IMU)YesYes
Max. tilt angle60°—
Dual-antenna headingYes—
Correction sourcesNTRIP (internet), UHF radio, L-band / PPP, SBASL-band / PPP, SBAS
Built-in UHF radioYesNo
L-band / PPP correctionsYesYes
Maps & navigation
Internal storage8 GB8 GB
Connectivity & safety
Wi-FiYes—
BluetoothYesYes
NFCYes—
USB-CYesYes
CameraYesYes
Battery & power
Battery life20 h12 h
Battery capacity4,900 mAh6,000 mAh
Power sourceBuilt-in rechargeable—
External power input5V / 2A—
Build & durability
Protection ratingIP68IP68
Water protection (IPx)IPx8IPx8
MIL-STD-810Yes—
Drop resistance2 m—
Operating temperature (min)-40 °C-30 °C
Operating temperature (max)65 °C60 °C
Weight800 g385 g
Width134 mm98 mm
Height86 mm46 mm
Depth134 mm98 mm
Housing materialMetal (all-in-one design)—
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