4D Massage Chairs
4D chairs add a third dimension of movement on top of an SL-Track/3D mechanism: the rollers vary their depth and speed automatically rather than running a single fixed intensity, mimicking the way a human hand changes pressure through a massage. This is the most advanced mechanism in the range, and priced accordingly.
| Model | Key features | Price | |
|---|---|---|---|
| RealRelax PS5100 | SL-Track, 4D Massage, Wireless Charging | £1,649 | View chair → |
| RealRelax PS5200 | SL-Track, 4D Massage, Anion + Aromatherapy | £1,799 | View chair → |
| RealRelax PS6500 | Long SL-Track, AI Soreness Detection, Voice Control | £2,399 | View chair → |
What’s standard on every 4D chair
All three models share the automatic depth-and-speed roller adjustment that defines 4D, on top of a long SL-Track. Where they differ is in the extras layered on top: wireless charging, aromatherapy, or — on the PS6500 — AI soreness detection and voice control.
Which 4D chair should you pick?
The PS5100 is the most affordable entry into 4D. The PS5200 adds anion release and aromatherapy if that matters to you. The PS6500 is the flagship of the entire RealRelax range, with AI-driven soreness detection and voice control layered on top of the longest SL-Track available.
Frequently Asked Questions
Is 4D actually a stronger massage than 3D?
Not necessarily stronger — the rollers adjust depth and speed automatically rather than running one fixed intensity, which some people notice more than others. See Types of Massage Chairs Explained for the full mechanical difference.
Is the price jump from 3D to 4D worth it?
Mostly if you specifically want the automatic roller adjustment or the extra sensing (voice control, AI detection on the PS6500) — core massage coverage doesn’t change dramatically between a well-specced 3D chair and an entry 4D one.
See Types of Massage Chairs Explained, or browse 2D, 2D ADV and 3D chairs.