Autonomous ErgoChair Ultra 2 vs SIHOO B300 Pro
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
$119.01
lower starting price for SIHOO B300 Pro than Autonomous ErgoChair Ultra 2 at the brand stores
Differences at a glance
Sources
- Flex-Frame Ergonomic Office Chair | Autonomous ErgoChair Ultra 2 ↗Checked Oct 17, 2026
- Sihoo B300 Pro Ergonomic Office Chair – Official US Sihoo Store ↗Checked Oct 16, 2026
Autonomous ErgoChair Ultra 2SIHOO B300 Pro
- Price
- $449$329.99 – $379.99
- Seat height
- 18–23 in46.8–55.3 cm
- Seat depth
- 18–20.5 in16.5–18.5 in (≈ 42-47 cm)
- Load capacity
- 320 lb330 lb (≈ 150 kg)
- Recline
- 25°Three lockable recline angles: 105°, 120°, 135°
- Headrest
- optional3D Ultra-Wide Headrest
- Warranty
- lifetime3-Year Free Warranty
Questions
Which is cheaper, the Autonomous ErgoChair Ultra 2 or the SIHOO B300 Pro?
The SIHOO B300 Pro is cheaper to start: $329.99 versus $449 for the Autonomous ErgoChair Ultra 2 at the brand stores (Oct 2026).
Which has a higher weight capacity?
The SIHOO B300 Pro, rated for 330 lb versus 320 lb for the Autonomous ErgoChair Ultra 2.
Which has a headrest?
Both: the Autonomous ErgoChair Ultra 2 as an option and the SIHOO B300 Pro as standard.
Autonomous ErgoChair Ultra 2: specs, reviews, where to buy →SIHOO B300 Pro: specs, reviews, where to buy →
