SIHOO Doro C300 Ultra V2 vs Duorest Alpha
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
VS
Differences at a glance
Sources
- Sihoo Doro C300 Ultra V2 | Ergonomic Office Chair – Official US Sihoo Store ↗Checked Oct 13, 2026
- DUOREST ALPHA (official product page) ↗Checked Sep 29, 2026
- Duorest Alpha Brochure (PDF) ↗Checked Sep 29, 2026
- DUOREST Warranty (official) ↗Checked Sep 29, 2026
- Duoback Official Store (Korea) (price) ↗Checked Sep 29, 2026
SIHOO Doro C300 Ultra V2Duorest Alpha
- Price
- $679.99 – $689.99₩413,000 – ₩520,000
- Load capacity
- 330 lb (≈ 150 kg)Standard 300 lbs. weight capacity
- Recline
- Recline Angles 105°, 120°, 135°Back reclines 18° from upright position; 3:1 back to seat synchronous movement with 3 position backlock
- Arms
- 8D Bionic Armrests (up, down, forward, back, rotate, or tilt)3D arms: height adjustment range 72mm (2.8”), front-to-back adjustment range 40mm (1.6”), pivoting arm caps 17º inward and 17º outward
- Headrest
- Ultra-wide 3D headrest, adjusts in three directionsOptional Headrest accessory adjusts 49mm (1.9”) vertically; pivoting range 63º
- Warranty
- 3 years (covers manufacturing defects)3 Year Body Frame; 1 Year Mechanism, Cylinder, Form, Casters; 1 Year Flexible Rubber Connector, Seat Pan Materials
Questions
Which has a headrest?
Both: the SIHOO Doro C300 Ultra V2 as standard and the Duorest Alpha as an option.
SIHOO Doro C300 Ultra V2: specs, reviews, where to buy →Duorest Alpha: specs, reviews, where to buy →
