HBADA E3 Pro vs SIHOO Doro C300 Pro V2: Specs and Price

Research note: This comparison uses each brand's published store specifications (HBADA US, UK and EU stores; SIHOO US official store), not a hands-on Chairpedia test. Figures are quoted as each brand states them, with the store they come from.

Introduction

The HBADA E3 Pro (2026 Edition) and the SIHOO Doro C300 Pro V2 are both mesh-back chairs with an adjustable seat depth, a manually set lumbar pad, a 3D or 4D headrest and armrests that move in many directions. In one sentence: the C300 Pro V2 lists lower and has the wider seat, while the E3 Pro has a published seat height range, a deeper recline and a longer warranty on its core parts. Both list a 330 lb maximum load on their US stores.

At a glance

HBADA E3 Pro — strengths and weaknesses

Documented features: HBADA's EU store gives a seat height of 46–54.5 cm (about 18.1–21.5 in) and a seat depth of 45–50 cm (about 17.7–19.7 in); the UK store gives a seat width of 51.5 cm. Four recline positions are listed: 105°, 115°, 130° and 140°. The 720° Omni-Functional armrests rotate the pad 360°, swivel the arm body 360°, move 7 cm in height and 6 cm forward and backward, and flip up 26° or down 13°. The 3-Zone Adaptive Lumbar Support has six height levels over 6 cm, 3.2 cm of forward/backward travel with an adaptive or lock mode, and side wings that rotate 40°. The 4D headrest rotates 70° on two axes, moves 4 cm in height and 7 cm forward and backward. The US store lists a 330 lbs maximum load, a recommended user height of 155–195 cm, and a warranty of 5 years on the base, gas lift and casters and 3 years on other components.

Check before buying: HBADA does not publish a chair weight for the E3 Pro. The regular US price is $659 without the footrest and $709 with it, the higher of the two chairs; the store also showed a lower sale price on 2026-10-08.

SIHOO Doro C300 Pro V2 — strengths and weaknesses

Documented features: SIHOO's US store lists a seat depth of 16.9-18.5 in, a seat width of 20.5 in, a backrest height of 20.5-23.6 in above the seat, a maximum load of up to 330 lbs, recline angles of 105°, 120° and 135°, and a net weight of 59.64 lbs. The 8D Bionic Armrests move up, down, forward and back, and rotate or tilt. SIHOO's Domino Sacral-Lumbar Support 2.0 moves up or down and has 3 support levels. The ultra-wide 3D headrest adjusts in three directions. SIHOO designs the chair for users from 150 to 190 cm and lists a 3-year warranty covering manufacturing defects.

Check before buying: SIHOO does not publish a seat height range for the C300 Pro V2; it is not published by the brand, so check with SIHOO if your desk height is tight. At 59.64 lbs it is a heavy chair to carry. The regular US price runs from $499.99 for the Black Standard Version to $549.99 for the White Footrest Version.

How they differ

Price. At regular US prices the C300 Pro V2 ($499.99-$549.99) lists about 159 dollars below the E3 Pro ($659-$709) at each matching level (without or with footrest).

Warranty. 5 years on the E3 Pro's base, gas lift and casters plus 3 years on other parts, against a 3-year warranty on the V2. The difference is on the load-bearing parts.

Seat. Only HBADA publishes a seat height (46–54.5 cm). For depth, the E3 Pro adjusts across 45–50 cm and the V2 across 16.9-18.5 in; for width, 51.5 cm on the E3 Pro against 20.5 in on the V2.

Recline. Four positions up to 140° on the E3 Pro; three angles up to 135° on the V2.

Lumbar. Both are set by hand. HBADA adds forward/backward travel, an adaptive mode and side wings; SIHOO lists height movement and 3 support levels.

Arms and headrest. HBADA's arms swivel and flip up or down; SIHOO's 8D arms rotate and tilt. HBADA publishes headrest travel figures; SIHOO lists an ultra-wide headrest with three directions.

Who should buy which

Pick the SIHOO Doro C300 Pro V2 if you want the lower list price, a wider seat and the 8D arms, and you can confirm the seat height suits your desk. Pick the HBADA E3 Pro if you want a published seat height range to check before ordering, the 140° recline, a lumbar with depth travel and side wings, and the 5-year cover on core parts. If you prefer a lumbar pad that follows the backrest by itself, compare the SIHOO Doro C300 Pro.

Sources

• HBADA US, UK and EU official stores — E3 Pro Ergonomic Office Chair 2026 Edition product pages (specifications, regular price, warranty), checked 2026-10-08.
• SIHOO US Official Store — Doro C300 Pro V2 product page and FAQ (specifications, regular prices, warranty), checked 2026-10-08.

Bottom line

Same 330 lb US load rating and both with seat depth adjustment and hand-set lumbar. The SIHOO Doro C300 Pro V2 is the lower-priced chair with the wider seat and 8D arms; the HBADA E3 Pro costs more but publishes its seat height, reclines further and carries a longer warranty on core parts. Check the live sale prices and return terms on both stores before ordering.