Learning from Engineering Research & Development and the Manufacturing of 8 previous generations of our massage chairs, Luraco Engineering Department spent the last 3 years to develop the all new i9 Max Plus Series (9th Generation of iRobotics) that is full of unique features and advanced technologies for delivering superior and therapeutic massages! As a result of the hard work of their engineering team, the i9 Max Plus Series has been awarded with 9 U.S Invention Patents & 6 Patents Pending.