Product Review · Massage Chairs · #4 Ranked
RELX Mars Pro
Premium 53" SL-track with stretch & voice · Reviewed by Drew · amazon.com live, Sept 28 2026
Why it scored a 77
At $1,899.98 the RELX Mars Pro is a flagship 53-inch SL-track chair with thirty-two airbags, dual-zone far-infrared heat, a yoga-style stretch and AI voice control. Features score 86 and satisfaction 88 across 462 reviews, but value sits at 66 at full price. The practical caveats are size and setup: it is 66 inches deep, the arms and legrest need assembly after curbside delivery, and owners report voice control that misfires. RELX discounts aggressively, so the coupon box matters. It suits a buyer with floor space to spare who is willing to wait for a sale.
What you're getting
- 53" SL-track from neck to thighs, shoulder detection
- Automatic back-width adjustment after body scan
- 15 auto plus 5 manual modes; AI voice control misfires
- 32 airbags at 5 pressure levels, yoga back stretch
- Far-infrared heat for lower back and calves
- Full foot rollers, leg airbags, stainless-steel frame
- 66" D x 29.8" W x 44.5" H, 330 lb max, casters included
- 3-year warranty; arms and legrest need assembly
ViperScore breakdown
At a glance
- 53" SL-track, shoulder detection, stretch
- 32 airbags, far-infrared back + calf heat
- 66" deep, 330 lb max, 3-yr warranty
- Price$1,899.98
- TierPremium 53" SL-track with stretch & voice
- Category rank#4 of 10
Should you buy the RELX Mars Pro?
The RELX Mars Pro is a flagship-style chair for someone who wants a 53-inch SL-track, calf heat and automatic back-width adjustment, and is willing to pay nearly $2,900 for it. It ranks fourth in massage chairs. Its Features and Satisfaction scores are among the best in the group; its Value score is not, because the BOSSCARE GR8602 4D and HealthRelife HR337 4D cover most of the same ground for $1,200 less. Buy it if far-infrared calf heat and a stainless-steel frame matter to you.
Where it earns its score
- Two heat zones. Far-infrared heat on the lower back and calves, which only the Culanta U1 matches in this group.
- Automatic width adjustment. After the body scan the chair adjusts back width on its own, not just roller position.
- High Satisfaction and Reliability. 88 and 85, respectively, near the top of the category.
- Stainless-steel frame with casters. Sturdier construction than the budget imports, and it can be rolled into place.
What to know first
- Value is the weakest factor at 66. $1,899.98 buys 3D rollers, not 4D, while the $1,699 BOSSCARE and HealthRelife both have 4D.
- It needs a big room. 66 inches deep, the deepest chair we ranked, plus assembly of the arms and legrest.
- Voice control misfires. Owners report the AI voice feature triggering incorrectly. Use the remote or app.
- 330 lb cap. Same as the GR8602, lower than the Favor-06's 400 lb.
Our verdict
The Mars Pro scores 77, Fair Buy, and ranks fourth. It earns that on features and satisfaction, not price. Buy it if you want calf heat and premium construction and the budget is not tight. Otherwise the HealthRelife HR337 4D scores higher for $1,200 less.
HealthRelife HR337 4D
Questions buyers ask
How big is the RELX Mars Pro?
66 inches deep, 29.8 wide and 44.5 tall, with a 330 lb maximum. Arms and legrest require assembly.
Does the RELX Mars Pro have 4D rollers?
No. It uses 3D rollers on a 53-inch SL-track with shoulder detection and automatic back-width adjustment.
Is the RELX Mars Pro worth $2,899?
Only if calf heat and a steel frame are must-haves. It scores 77, the same as the $1,699 BOSSCARE GR8602 4D.
Ready to check it out?
RELX Mars Pro · ViperScore 77 · Fair Buy · $1,899.98
How the other 9 massage chairs scored
79Real Relax Favor-06
79HealthRelife HR337 4D
77BOSSCARE GR8602 4D
75Real Relax PS6500 4D
75Osaki OS-Pro Admiral
72Culanta U1
72BOSSCARE GR8601
71FURNIMAT Zero Gravity
69Human Touch WholeBody 7.1
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