- Battery life 16 h vs 10 h
- Weight 730 g vs 1,065 g
- Built-in UHF radio
- Operating temperature (min) -20 °C vs -40 °C
- Operating temperature (max) 50 °C vs 65 °C
10 GNSS / RTK receivers at a similar price that compete with the S999 — what each does better, what it gives up and how the price compares.