SIHOO M18 vs Autonomous ErgoChair Ultra 2
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
$159.01
lower starting price for SIHOO M18 than Autonomous ErgoChair Ultra 2 at the brand stores
Differences at a glance
Sources
- M18 Classic Ergonomischer Bürostuhl – SIHOO DE official store ↗Checked Oct 16, 2026
- Flex-Frame Ergonomic Office Chair | Autonomous ErgoChair Ultra 2 ↗Checked Oct 17, 2026
- Sihoo M18 Ergonomic Office Chair – Official US Sihoo Store ↗Checked Sep 29, 2026
SIHOO M18Autonomous ErgoChair Ultra 2
- Price
- $289.99 – $299.99$449
- Seat height
- 44–54 cm18–23 in
- Seat depth
- 17.91 in (≈ 45.5 cm)18–20.5 in
- Load capacity
- 330 lb (≈ 150 kg)320 lb
- Recline
- Maximum 126° recline angle25°
- Headrest
- Headrest moves 3.9" up and down and pivots 45°optional
- Warranty
- 3 yearslifetime
Questions
Which is cheaper, the SIHOO M18 or the Autonomous ErgoChair Ultra 2?
The SIHOO M18 is cheaper to start: $289.99 versus $449 for the Autonomous ErgoChair Ultra 2 at the brand stores (Oct 2026).
Which has a higher weight capacity?
The SIHOO M18, rated for 330 lb versus 320 lb for the Autonomous ErgoChair Ultra 2.
Which has a headrest?
Both: the SIHOO M18 as standard and the Autonomous ErgoChair Ultra 2 as an option.
SIHOO M18: specs, reviews, where to buy →Autonomous ErgoChair Ultra 2: specs, reviews, where to buy →
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