SIHOO Doro C300 Ultra V2 vs FlexiSpot OC3

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

FlexiSpot

FlexiSpot OC3

$269.99

$410

lower starting price for FlexiSpot OC3 than SIHOO Doro C300 Ultra V2 at the brand stores

Differences at a glance

SIHOO Doro C300 Ultra V2FlexiSpot OC3

Price: $679.99 – $689.99$269.99
Seat height: 47.5–55.5 cm (≈ 18.7-21.9 in)18.5–22.4 in (47-57 cm)
Seat depth: 16.9–18.5 in (≈ 43-47 cm)15.9 in (40 cm)
Load capacity: 330 lb (≈ 150 kg)300 lb (136 kg)
Recline: Recline Angles 105°, 120°, 135°90–130°
Arms: 8D Bionic Armrests (up, down, forward, back, rotate, or tilt)2D; 3.9" height adjustment
Headrest: Ultra-wide 3D headrest, adjusts in three directions2D headrest; 2.1" height and 30° rotation
Lumbar support: Domino™ Sacral-Lumbar Support 2.0: moves up or down, 3 support levels1.9" Height Adjustable
Warranty: 3 years (covers manufacturing defects)5 Years

Which is cheaper, the SIHOO Doro C300 Ultra V2 or the FlexiSpot OC3?

The FlexiSpot OC3 is cheaper to start: $269.99 versus $679.99 for the SIHOO Doro C300 Ultra V2 at the brand stores (Oct 2026).

Which has a headrest?

Both: the SIHOO Doro C300 Ultra V2 as standard and the FlexiSpot OC3 as standard.