KI Altus vs SIHOO Doro S100

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

KI Altus

$881 – $1,516

SIHOO

SIHOO Doro S100

$499.99 – $509.99

$381.01

lower starting price for SIHOO Doro S100 than KI Altus at the brand stores

Differences at a glance

KI AltusSIHOO Doro S100

Price: $881 – $1,516$499.99 – $509.99
Seat height: 17–21.75 in (43.2–55.2 cm); 16.25–20.75 in (41.3–52.7 cm)46–54 cm
Seat depth: 17.25–19.75 in (43.8–50.2 cm); 15.5–18 in (39.4–45.7 cm)15.15–17.12 in (≈ 38.5-43.5 cm)
Load capacity: supports up to 400 pounds330 lb (≈ 150 kg)
Arms: Adjustable arms, fixed arms, or armless4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage); Up and down 2.76 in, forward and back 1.18 in, side to side, rotate 72°
Headrest: Headrest available (Mesh Task / Fabric Task Headrest Adjustable Armchair)Integrated headrest adjusts up or down; upper backrest in five levels
Lumbar support: Mesh chair: optional adjustable lumbar (height and depth); fabric chair: automatic lumbar supportDual dynamic lumbar support
Warranty: Lifetime3 years

Which is cheaper, the KI Altus or the SIHOO Doro S100?

The SIHOO Doro S100 is cheaper to start: $499.99 versus $881 for the KI Altus at the brand stores (Sep 2026).

Which has a headrest?

Both: the KI Altus as standard and the SIHOO Doro S100 as standard.