HBADA X7 Air vs SIHOO Doro C300 Pro: Which Should You Buy?

Key difference: The C300 Pro lists about $610 lower, but the X7 Air carries a 5-year warranty.

HBADA and SIHOO each publish their own specifications, and this comparison of the X7 Air and C300 Pro uses only those, plus regular US list prices.

Why compare them

Why put the HBADA X7 Air next to the SIHOO Doro C300 Pro? Both brands describe a lumbar support that adjusts itself on these two chairs, with an electric front-back setting on the HBADA X7 Air, but the X7 Air lists far above the SIHOO Doro C300 Pro, so this page shows what the gap pays for on the brands' own specifications.

Specs side by side

Strengths and weaknesses

HBADA X7 Air

Strengths

• Longer warranty: 5 years, against 3 years on the C300 Pro.
• Deeper recline: up to 140° against 135° on the C300 Pro.

Good to know

• Compare the list prices first: it starts at $1,399, against $789.99 for the C300 Pro.
• If you want a built-in footrest, look at the C300 Pro; no footrest version is listed for the X7 Air.

SIHOO Doro C300 Pro

Strengths

• Lower list price: from $789.99 against $1,399 for the X7 Air.
• A Footrest Version is sold; none is listed for the X7 Air.

Good to know

• Read the warranty terms: 3 years, against 5 years on the X7 Air.
• If you lean far back, note it reclines up to 135°, against 140° on the X7 Air.

How they differ

Price. At regular US list prices the HBADA X7 Air is $1,399 and the SIHOO Doro C300 Pro is $789.99–$839.99. The C300 Pro lists about $610 below the X7 Air, before any store sale. Price options: the X7 Air — X7 Air, Gray: $1,399; the C300 Pro — $789.99–$839.99.

Warranty. The HBADA X7 Air lists “5 years”, the SIHOO Doro C300 Pro “3 years”. The X7 Air's cover runs longer than the C300 Pro's.

Recline. The HBADA X7 Air lists “Up to 140°; positions at 105°, 116°, 128° and 140°”, the SIHOO Doro C300 Pro “Up to 135°”. The X7 Air leans back further than the C300 Pro.

Footrest. SIHOO sells a Footrest Version of the C300 Pro; no such version is listed for the X7 Air.

Seat size. Seat height: the HBADA X7 Air lists “17.52–20.87 in (44.5–53 cm)”, the SIHOO Doro C300 Pro “18.11–22.32 in (46–56.7 cm)”. Seat width: the HBADA X7 Air lists “20.5 in (52 cm)”, the SIHOO Doro C300 Pro “20.28 in (≈51.5 cm)”. Seat depth: the HBADA X7 Air lists “15.94–17.91 in (40.5–45.5 cm)”, the SIHOO Doro C300 Pro “16.81–17.76 in (≈42.7–45.1 cm)”.

Other details. For the X7 Air and C300 Pro, the table above gives the armrests, headrest, lumbar support, maximum load and chair weight in each brand's own wording.

Who should buy which

• Pick the X7 Air over the C300 Pro if you want a longer warranty (5 years).
• Pick the X7 Air over the C300 Pro if you want a deeper recline (up to 140°).
• Pick the X7 Air over the C300 Pro if you want a seat that goes lower: 17.52–20.87 in (44.5–53 cm).
• Pick the C300 Pro over the X7 Air if you want the lower price — the C300 Pro lists about $610 below the X7 Air.
• Pick the C300 Pro over the X7 Air if you want a built-in footrest (Footrest Version).
• Pick the C300 Pro over the X7 Air if you want a seat that rises higher: 18.11–22.32 in (46–56.7 cm).

Not published by the brand (X7 Air vs C300 Pro): chair weight for the HBADA X7 Air.

Sources

• HBADA X7 Air (compared here with the C300 Pro): HBADA X7 Air Smart Ergonomic Office Chair with AI Lumbar Support – HBADA US official store, checked 2026-10-11; US list price from HBADA US Official Store, checked 2026-10-11.
• SIHOO Doro C300 Pro (compared here with the X7 Air): Sihoo Doro C300 Pro Ergonomic Office Chair Fully Loaded Comfort – EU Sihoo official Shop; Sihoo Doro C300 Pro Ergonomic Office Chair – Official US Sihoo Store; Doro C300 Pro Ergonomic Office Chair | Adjustable Lumbar, 6D Armrests, Smart Recline – UK Sihoo official Shop, checked 2026-10-08; US list price from SIHOO US Official Store, checked 2026-10-08.
• Figures marked ≈ for the X7 Air and C300 Pro are Chairpedia's unit conversions, not brand figures.