X-Chair X3 vs SIHOO M56C

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

X-Chair

X-Chair X3

$979

SIHOO

SIHOO M56C

$184.99

$794.01

lower starting price for SIHOO M56C than X-Chair X3 at the brand stores

Differences at a glance

X-Chair X3SIHOO M56C

Price: $979$184.99
Seat depth: 16.75–19.25 in17.1 in (≈ 43.4 cm)
Load capacity: 275 lb (125 kg)300 lb (≈ 136 kg)
Recline: SciFloat Infinite Recline + Tilt Lock and Tension allows you to recline and lock into position or increase tension in your recline motion for more fluid movement.Maximum tilt angle of 125° (reclining lock with 1 position)
Arms: 4-Dimensional armrests come standard (up, down, side-to-side, front-to-back); option to upgrade to FS 360 rotational armrests; Armrest Height 5.875in - 8.875inArmrests adjustable up and down
Headrest: Optional add-on (standard configuration: No headrest; Headrest +$115)Headrest moves up and down and tilts
Lumbar support: Dynamic Variable Lumbar (DVL)® Support; height adjustable backrest raises the DVL®Ultra-wide dynamic lumbar support: a flexible elastic plate that moves with the backrest (no manual adjustment listed)
Warranty: 5 years (all parts and materials); 15 years (non-moving metal components, chair frame)3 years

Which is cheaper, the X-Chair X3 or the SIHOO M56C?

The SIHOO M56C is cheaper to start: $184.99 versus $979 for the X-Chair X3 at the brand stores (Sep 2026).

Which has a higher weight capacity?

The SIHOO M56C, rated for 300 lb versus 275 lb for the X-Chair X3.

Which has a headrest?

Both: the X-Chair X3 as an option and the SIHOO M56C as standard.