SIHOO B300 Pro 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 B300 Pro

$329.99 – $379.99

Humanscale

Humanscale Diffrient Smart

$1,987

$1,657.01

lower starting price for SIHOO B300 Pro than Humanscale Diffrient Smart at the brand stores

Differences at a glance

SIHOO B300 ProHumanscale Diffrient Smart

Price: $329.99 – $379.99$1,987
Seat height: 46.8–55.3 cm16.5” – 22.8”
Seat depth: 16.5–18.5 in (≈ 42-47 cm)16.25” - 18.75” seat depth adjustment range
Load capacity: 330 lb (≈ 150 kg)up to 400 lbs.
Recline: Three lockable recline angles: 105°, 120°, 135°18° recline + 8° backrest tilt
Arms: 6D All-Around Armrests (rotate, adjust, flip up)Fixed Duron Arms / Adjustable Duron Arms / 4D Adj Duron Arms / Armless
Lumbar support: 4D MicroFit Lumbar Support: 0.8" depth and 2" height adjustmentTri-panel Form-Sensing mesh adapts its lumbar support to each user (no manual lumbar adjustment)
Warranty: 3-Year Free Warranty15-year, 24/7 warranty

Which is cheaper, the SIHOO B300 Pro or the Humanscale Diffrient Smart?

The SIHOO B300 Pro is cheaper to start: $329.99 versus $1,987 for the Humanscale Diffrient Smart at the brand stores (Oct 2026).