KI Altus vs SIHOO Doro C300 Ultra V2

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 C300 Ultra V2

$679.99 – $689.99

$201.01

lower starting price for SIHOO Doro C300 Ultra V2 than KI Altus at the brand stores

Differences at a glance

KI AltusSIHOO Doro C300 Ultra V2

Price: $881 – $1,516$679.99 – $689.99
Seat height: 17–21.75 in (43.2–55.2 cm); 16.25–20.75 in (41.3–52.7 cm)47.5–55.5 cm (≈ 18.7-21.9 in)
Seat depth: 17.25–19.75 in (43.8–50.2 cm); 15.5–18 in (39.4–45.7 cm)16.9–18.5 in (≈ 43-47 cm)
Load capacity: supports up to 400 pounds330 lb (≈ 150 kg)
Arms: Adjustable arms, fixed arms, or armless8D Bionic Armrests (up, down, forward, back, rotate, or tilt)
Headrest: Headrest available (Mesh Task / Fabric Task Headrest Adjustable Armchair)Ultra-wide 3D headrest, adjusts in three directions
Lumbar support: Mesh chair: optional adjustable lumbar (height and depth); fabric chair: automatic lumbar supportDomino™ Sacral-Lumbar Support 2.0: moves up or down, 3 support levels
Warranty: Lifetime3 years (covers manufacturing defects)

Which is cheaper, the KI Altus or the SIHOO Doro C300 Ultra V2?

The SIHOO Doro C300 Ultra V2 is cheaper to start: $679.99 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 C300 Ultra V2 as standard.