X-Chair X4 vs Kokuyo Ing

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

X-Chair

X-Chair X4

$1,199 – $1,249

Kokuyo

Kokuyo Ing

¥119,790 – ¥183,150

≈ $750 – $1,150

13.5 lb

lighter: Kokuyo Ing weighs less than X-Chair X4 (official specs)

Differences at a glance

X-Chair X4Kokuyo Ing

Price: $1,199 – $1,249¥119,790 – ¥183,150
Seat height: 17.5–20.88 in425–515 mm (16.7–20.3 in)
Seat depth: 17.75–19.75 in455 mm (17.9 in)
Recline: SciFloat Infinite Recline + Tilt Lock and Tension allows you to recline and lock into position or increase tension in your recline motion for more fluid movement.Gliding mechanism (back and seat move 360° front-back and side to side); front free tilt
Arms: 4-Dimensional armrests come standard (up, down, side-to-side, front-to-back); option to upgrade to FS 360 rotational armrests; Armrest Height 5.875in - 8.875inArm height adjusts in 11 steps with a button; armrest rotates 60° inward (2 steps)
Headrest: Optional add-on (standard configuration: No headrest; Headrest +$150)With-headrest type (tall back)
Warranty: 5 years (all parts and materials); 15 years (non-moving metal components, chair frame)Structure 10 years (purchases from Jan 1, 2023); mechanisms and moving parts 2 years; exterior and surface finish 1 year

Which has a headrest?

Both: the X-Chair X4 as an option and the Kokuyo Ing as standard.

What do owners mention most?

Back support for the X-Chair X4, and comfort for the Kokuyo Ing, based on review summaries.