AndaSeat details Phantom 4 chair adjustments in new design brief

AndaSeat published a design brief for its Phantom 4 chair line that explains how the seats adjust as users shift between work, reading and gaming positions. The company is drawing a line between mechanical support features and any medical or posture-correction claims.

Why it matters: - AndaSeat is positioning the Phantom 4 Series as adjustable furniture, not a health product. - The brief could help buyers, reviewers and workspace planners understand what the chair can and cannot do. - The company is also trying to separate product specifications from posture or medical claims.

What happened: - AndaSeat published a design brief on July 30, 2026, in Spokane, Washington, describing the Phantom 4 Series and its changing seated positions. - The brief explains the development approach behind lumbar contact, recline and user fit. - The company said the document is meant to show how the chair changes mechanically as a person moves between upright work, communication, reading, gaming and more reclined activities. - CEO Lin Zhou said the brief is meant to explain the mechanisms and their limits. - AndaSeat said the Phantom 4 Series does not define a universal posture, diagnose seating problems, prescribe a correct position or replace movement during the day.

The details: - Both Phantom 4 and Phantom 4 Pro use the same dynamic lumbar structure, 15-level lumbar-depth range, recline limit and rocking range. - The chairs differ in armrests, head pillows, tilt mechanisms and several supporting components. - The central mechanism is a dynamic auto-tracking lumbar section with 15 locking depth positions across a stated range of 0 to 95 mm. - When extended, the lumbar section can move about 5 degrees to either side and tilt through a 25-degree forward-and-back range. - The lumbar function adjusts lower-back contact, but it does not evaluate posture, score a sitting position or automatically choose a setting. - Both models recline to 135 degrees and include a 15-degree rocking range. - The Phantom 4 Pro includes a multi-function tilt mechanism that can lock rocking at a selected position. - The standard Phantom 4 uses a butterfly tilt mechanism with adjustable rocking tension. - The seat uses 55 kg/m³ cold-cure foam as its base material. - The series is specified for users approximately 150 to 185 cm tall and up to 120 kg, subject to body proportions and individual fit. - Phantom 4 Pro uses 3D armrests with 360-degree rotation, about 6 cm of forward-and-back movement and 7 cm of height adjustment. - The Pro model also includes a magnetic memory-foam head pillow with a gel layer and an attachment range of about 20 cm. - The Pro tilt mechanism provides 6.5 cm of seat-height adjustment and can lock the rocking function. - The standard Phantom 4 uses 2D armrests with forward-and-back and vertical adjustment. - The standard model includes a memory-foam head pillow attached by an elastic strap and a butterfly tilt mechanism with 10 cm of seat-height adjustment. - Both models use 60 mm polyurethane-coated casters and are available with leather or linen upholstery. - Magnetic side covers provide access to the backrest connection points during assembly or maintenance. - Upholstery, color and component configurations may vary by region.

Between the lines: - The brief reflects a broader shift in seating marketing away from posture promises and toward measurable mechanical range. - AndaSeat is framing comfort as task-dependent, with different settings for typing, controller gaming or reclined viewing. - The comparison between Phantom 4 and Phantom 4 Pro is about configuration, not a claim that one chair is universally better. - The company is trying to make the chair sound more like adjustable equipment than a wellness device.

What's next: - AndaSeat said future product communications will keep separating measurable specifications from comfort preferences and health-related claims. - The company says the brief is intended to give journalists, workspace professionals and users a clearer explanation of how the main mechanisms work. - The Phantom 4 Series will likely continue to be discussed in terms of movement range, contact adjustment, fit and model configuration.

The bottom line: - AndaSeat wants the Phantom 4 Series judged on adjustability and fit, not on posture or medical outcomes. - The design brief makes that positioning explicit while laying out the hardware differences between the two models.

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