AndaSeat Phantom 4 vs SIHOO M18
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
2 years
longer warranty on AndaSeat Phantom 4 than SIHOO M18 (official terms)
Differences at a glance
Sources
- AndaSeat Phantom 4 specification sheet (official product page image) ↗Checked Oct 17, 2026
- M18 Classic Ergonomischer Bürostuhl – SIHOO DE official store ↗Checked Oct 16, 2026
- Sihoo M18 Ergonomic Office Chair – Official US Sihoo Store ↗Checked Sep 29, 2026
- AndaSeat Phantom 4 Series product page ↗Checked Oct 17, 2026
AndaSeat Phantom 4SIHOO M18
- Price
- $319$289.99 – $299.99
- Seat height
- 17.3–21.2 in44–54 cm
- Seat depth
- 22 in17.91 in (≈ 45.5 cm)
- Load capacity
- 220 lb330 lb (≈ 150 kg)
- Recline
- 90–135°Maximum 126° recline angle
- Arms
- 2DAdjustable armrests (Up and down)
- Headrest
- elastic-strap memory foam head pillowHeadrest moves 3.9" up and down and pivots 45°
- Lumbar support
- dynamic auto-tracking, 15 positions, 0-3.7 inLumbar support adjusts vertically and horizontally
- Warranty
- 5 year3 years
Questions
Which is cheaper, the AndaSeat Phantom 4 or the SIHOO M18?
The SIHOO M18 is cheaper to start: $289.99 versus $319 for the AndaSeat Phantom 4 at the brand stores (Oct 2026).
Which has a higher weight capacity?
The SIHOO M18, rated for 330 lb versus 220 lb for the AndaSeat Phantom 4.
Which has a headrest?
Both: the AndaSeat Phantom 4 as standard and the SIHOO M18 as standard.
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- SIHOO M18 vs Branch Ergonomic Chair Arms: Adjustable armrests on SIHOO M18; 3D removable armrests on Branch Ergonomic Chair.
- SIHOO M18 vs FlexiSpot OC3 Arms: Adjustable armrests on SIHOO M18; 2D on FlexiSpot OC3.



