SIHOO Doro C300 vs SIHOO Doro C300 Pro V2: Which Should You Buy?

Key difference: The C300 Pro V2 is the newer model and has 8D armrests where the C300 has 4D, but the C300 keeps automatic lumbar support.

SIHOO's official store pages are the only source for the C300 and C300 Pro V2 figures below; list prices are the store's regular US prices, and neither chair was tested by Chairpedia.

Why compare them

Why put the SIHOO Doro C300 next to the SIHOO Doro C300 Pro V2? Both belong to SIHOO's Doro C300 family: the base C300 and the later Pro V2 revision, which reworks the armrests and the lumbar design.

Specs side by side

Strengths and weaknesses

SIHOO Doro C300

Strengths

• Automatic lumbar support ("Self-adaptive dynamic lumbar support"), where the C300 Pro V2's is set by hand.

Weaknesses

• 4D armrests, against 8D on the C300 Pro V2.
• Costs more: from $559.99 against $499.99 for the C300 Pro V2.
• No manual lumbar setting is listed for the C300, unlike the C300 Pro V2.
• Shallower recline: up to 130° against 135° on the C300 Pro V2.

SIHOO Doro C300 Pro V2

Strengths

• 8D armrests, against 4D armrests on the C300.
• Lower list price: from $499.99 against $559.99 for the C300.
• Lumbar you set by hand ("Domino Sacral-Lumbar Support 2.0: moves up or down, 3 support levels"), where the C300's works on its own.
• Deeper recline: up to 135° against 130° on the C300.

Weaknesses

• Lumbar is set by hand ("Domino Sacral-Lumbar Support 2.0: moves up or down, 3 support levels"), while the C300's moves on its own.

How they differ

Armrests. The SIHOO Doro C300 lists “4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage)”, the SIHOO Doro C300 Pro V2 “8D Bionic Armrests (up, down, forward, back, rotate, or tilt)”. With 8D armrests the C300 Pro V2 lets you set the pads in more ways than the C300.

Lumbar support. The SIHOO Doro C300 lists “Self-adaptive dynamic lumbar support”, the SIHOO Doro C300 Pro V2 “Domino Sacral-Lumbar Support 2.0: moves up or down, 3 support levels”. The C300's lumbar moves on its own as you shift, while the C300 Pro V2's is positioned by hand.

Price. At regular US list prices the SIHOO Doro C300 is $559.99–$569.99 and the SIHOO Doro C300 Pro V2 is $499.99–$549.99. The C300 Pro V2 lists $60 below the C300, before any store sale.

Recline. The SIHOO Doro C300 lists “Up to 130°; positions at 110°, 120° and 130°”, the SIHOO Doro C300 Pro V2 “Up to 135°; positions at 105°, 120° and 135°”. The C300 Pro V2 leans back further.

Seat size. Seat height: the SIHOO Doro C300 lists “18.50–21.65 in (47–55 cm)”, the SIHOO Doro C300 Pro V2 nothing. Seat width: the SIHOO Doro C300 lists “19.49 in (49.5 cm)”, the SIHOO Doro C300 Pro V2 “20.5 in (≈52 cm)”. Seat depth: the SIHOO Doro C300 lists “43.5–46 cm”, the SIHOO Doro C300 Pro V2 “16.9–18.5 in (≈43–47 cm)”.

Other details. Headrest: the SIHOO Doro C300 lists “3D Mechanical Headrest”, the SIHOO Doro C300 Pro V2 “Ultra-wide 3D headrest, adjusts in three directions”. Chair weight: the SIHOO Doro C300 lists “51.15 lb (23.20 kg)”, the SIHOO Doro C300 Pro V2 “59.64 lb (≈27.1 kg)”.

Same on both. The C300 and C300 Pro V2 list the same warranty (3 years), maximum load (330 lb, ≈150 kg) and Footrest Version option.

Who should buy which

• Pick the C300 over the C300 Pro V2 if you want lumbar support that adjusts itself as you move, with nothing to set.
• Pick the C300 over the C300 Pro V2 if you want a lighter chair to move around: 51.15 lb (23.20 kg) against 59.64 lb (≈27.1 kg).
• Pick the C300 Pro V2 over the C300 if you want 8D armrests rather than 4D.
• Pick the C300 Pro V2 over the C300 if you want the lower price — the C300 Pro V2 lists $60 below the C300.
• Pick the C300 Pro V2 over the C300 if you want a lumbar position you set yourself and that stays put.

Not published by the brand (C300 vs C300 Pro V2): seat height for the SIHOO Doro C300 Pro V2.

Sources

• SIHOO Doro C300 (compared here with the C300 Pro V2): Doro C300 Ergonomic Office Chair – UK Sihoo official Shop; Sihoo Doro C300 Advanced Ergonomic Office Chair – Official US Sihoo Store, checked 2026-09-29; US list price from SIHOO US Official Store, checked 2026-10-07.
• SIHOO Doro C300 Pro V2 (compared here with the C300): Sihoo Doro C300 Pro V2 Ergonomic Office Chair – Official US Sihoo Store, checked 2026-10-08; US list price from SIHOO US Official Store, checked 2026-10-08.
• Figures marked ≈ for the C300 and C300 Pro V2 are Chairpedia's unit conversions, not brand figures.