Autonomous ErgoChair Ultra 2 vs SIHOO Doro S100

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

Autonomous

Autonomous ErgoChair Ultra 2

$449

SIHOO

SIHOO Doro S100

$499.99 – $509.99

1.8 in

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

Differences at a glance

Autonomous ErgoChair Ultra 2SIHOO Doro S100

Price: $449$499.99 – $509.99
Seat height: 18–23 in46–54 cm
Seat depth: 18–20.5 in15.15–17.12 in (≈ 38.5-43.5 cm)
Load capacity: 320 lb330 lb (≈ 150 kg)
Recline: 25°Reclines up to 135°
Headrest: optionalIntegrated headrest adjusts up or down; upper backrest in five levels
Warranty: lifetime3 years

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

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