SIHOO Doro C300 Ultra V2 vs SIHOO M57

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

SIHOO

SIHOO Doro C300 Ultra V2

$679.99 – $689.99

SIHOO

SIHOO M57

$319.99

$360

lower starting price for SIHOO M57 than SIHOO Doro C300 Ultra V2 at the brand stores

Differences at a glance

SIHOO Doro C300 Ultra V2SIHOO M57

Price: $679.99 – $689.99$319.99
Seat height: 47.5–55.5 cm (≈ 18.7-21.9 in)46–55 cm (≈ 18.1-21.7 in)
Seat depth: 16.9–18.5 in (≈ 43-47 cm)18.11 in (≈ 46 cm)
Load capacity: 330 lb (≈ 150 kg)330 lb (≈ 150 kg)
Recline: Recline Angles 105°, 120°, 135°Reclines up to 126°
Arms: 8D Bionic Armrests (up, down, forward, back, rotate, or tilt)3D coordinated armrests (up and down, left and right, forward and backward)
Headrest: Ultra-wide 3D headrest, adjusts in three directionsHeadrest adjusts vertically up to 3.9 inches and rotates 45 degrees
Lumbar support: Domino™ Sacral-Lumbar Support 2.0: moves up or down, 3 support levelsDual-adjustable lumbar support (vertical and horizontal)
Warranty: 3 years (covers manufacturing defects)3 years

Which is cheaper, the SIHOO Doro C300 Ultra V2 or the SIHOO M57?

The SIHOO M57 is cheaper to start: $319.99 versus $679.99 for the SIHOO Doro C300 Ultra V2 at the brand stores (Oct 2026).

Which has a higher weight capacity?

Neither. Both are rated for 330 lb in their official specifications.

Which has a headrest?

Both: the SIHOO Doro C300 Ultra V2 as standard and the SIHOO M57 as standard.