SIHOO Doro C300 Ultra V2 vs Humanscale Diffrient Smart

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

Humanscale

Humanscale Diffrient Smart

$1,987

$1,307.01

lower starting price for SIHOO Doro C300 Ultra V2 than Humanscale Diffrient Smart at the brand stores

Differences at a glance

SIHOO Doro C300 Ultra V2Humanscale Diffrient Smart

Price: $679.99 – $689.99$1,987
Seat height: 47.5–55.5 cm (≈ 18.7-21.9 in)16.5” – 22.8”
Seat depth: 16.9–18.5 in (≈ 43-47 cm)16.25” - 18.75” seat depth adjustment range
Load capacity: 330 lb (≈ 150 kg)up to 400 lbs.
Recline: Recline Angles 105°, 120°, 135°18° recline + 8° backrest tilt
Arms: 8D Bionic Armrests (up, down, forward, back, rotate, or tilt)Fixed Duron Arms / Adjustable Duron Arms / 4D Adj Duron Arms / Armless
Lumbar support: Domino™ Sacral-Lumbar Support 2.0: moves up or down, 3 support levelsTri-panel Form-Sensing mesh adapts its lumbar support to each user (no manual lumbar adjustment)
Warranty: 3 years (covers manufacturing defects)15-year, 24/7 warranty

Which is cheaper, the SIHOO Doro C300 Ultra V2 or the Humanscale Diffrient Smart?

The SIHOO Doro C300 Ultra V2 is cheaper to start: $679.99 versus $1,987 for the Humanscale Diffrient Smart at the brand stores (Oct 2026).