Osaki Massage Chair Comparison Chart
| Models | Osaki OS-1000 |
Osaki OS-2000 |
Osaki OS-3000 |
Osaki OS-4000 |
 |
 |
 |
 |
|
| ZERO Gravity | No | No | Yes | Yes |
| Back Massage Type | 4 | 6 | 6 | 6 |
| Air Bags | 20 | 20 | 26 | 32 |
| Heat | No | Yes | No | Yes |
| Pre-set Program | 5 | 4 | 5 | 5 |
| Massage Speed Settigs | 5 | 5 | 5 | 5 |
| Massage Width Settigs | 3 | 5 | 5 | 5 |
| Power Recline | 170° angle | 170° angle | 170° angle | 170° angle |
| Side Shoulder Massage | No | No | No | Yes |
| Headrest Airbags | No | No | No | Yes |
| Hip Airbags | No | No | No | Yes |
| Back Air Massage | No | No | Yes | Yes |
| Seat Air Massage | Yes | Yes | Yes | Yes |
| Removable Headset and Back Pad | Yes | Yes | Yes | Yes |
| Soft Synthetic Leather Cover | Yes | Yes | Yes | Yes |
| MP3 PLAYER | No | Yes | No | No |
| Wireless Remote | No | No | Yes | Yes |
| Massage Rollers | 4 | 6 | 4 | 4 |
