SIHOO Doro S100 vs Autonomous ErgoChair Ultra 2

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

SIHOO

SIHOO Doro S100

$499.99 – $509.99

Autonomous

Autonomous ErgoChair Ultra 2

$449

1.8 in

more seat-height adjustment on Autonomous ErgoChair Ultra 2 than SIHOO Doro S100 (official specs)

Differences at a glance

SIHOO Doro S100Autonomous ErgoChair Ultra 2

Price: $499.99 – $509.99$449
Seat height: 46–54 cm18–23 in
Seat depth: 15.15–17.12 in (≈ 38.5-43.5 cm)18–20.5 in
Load capacity: 330 lb (≈ 150 kg)320 lb
Recline: Reclines up to 135°25°
Headrest: Integrated headrest adjusts up or down; upper backrest in five levelsoptional
Warranty: 3 yearslifetime

Which is cheaper, the SIHOO Doro S100 or the Autonomous ErgoChair Ultra 2?

The Autonomous ErgoChair Ultra 2 is cheaper to start: $449 versus $499.99 for the SIHOO Doro S100 at the brand stores (Oct 2026).

Which has a higher weight capacity?

The SIHOO Doro S100, rated for 330 lb versus 320 lb for the Autonomous ErgoChair Ultra 2.

Which has a headrest?

Both: the SIHOO Doro S100 as standard and the Autonomous ErgoChair Ultra 2 as an option.