Compare · 3D vs 4D
Osaki Champ II vs Titan Rejuv 4D
Same warranty, same track, same delivery options. The real choice is 3D rollers and a lower price band, or 4D rollers and a published height range.
Osaki · $1,000–$2,000
Osaki OS-3D Champ II
3D rollers, a smaller and lighter box, and the lower price band.
Check price on AmazonVS
Titan · $2,000–$3,000
Titan Rejuv 4D
4D rollers, rated for users 5'0"–6'5", two more airbags.
Check price on AmazonWhich one should you buy?
Pick the Champ II if
You want to spend less and carry less
- Lower price band: $1,000–$2,000.
- Smaller box at 211 lb, about 50 lb lighter than the Rejuv's.
- Lower-back heat, set at about 75–83°F.
- No published height range. Check the recent user feedback on Amazon before you buy.
Pick the Rejuv 4D if
You want 4D rollers and a known height fit
- 4D rollers rather than 3D.
- Rated for users 5'0" to 6'5".
- Needs a slightly narrower door: 29 in.
- Costs more, and its box is 74 in long and 264 lb.
Every published difference
| Osaki OS-3D Champ II | Titan Rejuv 4D | |
|---|---|---|
| Rollers | 3D | 4D |
| Height range | Not published | 5'0"–6'5" |
| Weight limit | 264 lb | 260 lb |
| Narrowest door | 29.5 in | 29 in |
| Size upright (W × L × H) | 29.5 × 59 × 47 in | 29 × 60 × 45 in |
| Size reclined (W × L × H) | 29.5 × 71 × 38 in | 29 × 71 × 34 in |
| Box size (W × L × H) | 51.2 × 30.3 × 48.4 in | 30 × 74 × 32 in |
| Box weight | 211 lb | 264 lb |
| Airbags | 32 | 34 |
| Heat | Lumbar heat, approx. 75-83°F | Yes |
| Price band | $1,000–$2,000 | $2,000–$3,000 |
Only the rows where the two chairs differ. Green marks the better published number. Values were last checked Oct 8, 2026.
These won't decide it
TrackSL-track
Zero gravity3-stage zero gravity
Voltage110 - 120V
AssemblyWhite Glove option includes installation; the free default is curbside delivery
DeliveryCurbside Delivery free; White Glove Delivery add an amount not shown here (manufacturer page options)
Warranty1 Year (Parts/Labor), 2 & 3 Year (Parts Only) - Free
Three things to check first
!
4D isn't one standardBrands describe 4D differently. Check what each brand says the rollers actually do.
!
Measure the box pathCurbside delivery leaves the box at your curb. The Rejuv's box is 74 in long and 264 lb.
!
No height range on the Champ IIIf anyone at home is over 6'0", ask Osaki for the range before you order.
Our method, in short
Why these two
- They share a warranty, a track type and delivery options, so the roller type is the clearest difference.
- Both were in stock on Amazon US when we checked.
Where the numbers come from
- Specs come from each Amazon listing and the brand's product page. Last checked Oct 8, 2026.
- We haven't sat in either chair. We compare what the brands publish.
The pages behind the table
- Osaki OS-3D Champ II
- osakiusa.
com — backs Rollers, Track, Weight limit, Narrowest door, Size upright (W × L × H), Size reclined (W × L × H), Box size (W × L × H), Box weight, Airbags, Heat, Zero gravity, Voltage, Assembly, Delivery, Warranty, checked 2026-10-08. - Amazon listing — backs Height range, checked 2026-10-08.
- osakiusa.
- Titan Rejuv 4D
- titanchair.
com — backs Rollers, Track, Weight limit, Narrowest door, Size upright (W × L × H), Size reclined (W × L × H), Box size (W × L × H), Box weight, Airbags, Zero gravity, Voltage, Assembly, Delivery, Warranty, checked 2026-10-08. - Amazon listing — backs Height range, Heat, checked 2026-10-08.
- titanchair.