SIHOO M59AS 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 M59AS

SIHOO

SIHOO M59AS

$449.99

VS
Autonomous ErgoChair Ultra 2

Autonomous

Autonomous ErgoChair Ultra 2

$449

1.1 in

more seat-height adjustment on Autonomous ErgoChair Ultra 2 than SIHOO M59AS (official specs)

Differences at a glance

SIHOO M59ASAutonomous ErgoChair Ultra 2
Price
$449.99$449
Seat height
46.5–56.5 cm18–23 in
Seat depth
17.13 in (≈ 43.5 cm)18–20.5 in
Load capacity
330 lb (≈ 150 kg)320 lb
Recline
Recline up to 126°25°
Headrest
Double-jointed headrest (height and angle)optional
Warranty
3 yearslifetime

Questions

Which is cheaper, the SIHOO M59AS or the Autonomous ErgoChair Ultra 2?

The Autonomous ErgoChair Ultra 2 is cheaper to start: $449 versus $449.99 for the SIHOO M59AS at the brand stores (Oct 2026).

Which has a higher weight capacity?

The SIHOO M59AS, rated for 330 lb versus 320 lb for the Autonomous ErgoChair Ultra 2.

Which has a headrest?

Both: the SIHOO M59AS as standard and the Autonomous ErgoChair Ultra 2 as an option.

SIHOO M59AS: specs, reviews, where to buy →Autonomous ErgoChair Ultra 2: specs, reviews, where to buy →

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