Equipped with the latest technology, the 4000T allows for the rollers to map the back curvature with fine-tuned accuracy, for a precise massage perfectly working the muscles. This highly advanced chair will self-adjust, making each massage experience feel customized. The zero-gravity position is the perfect position to enjoy a massage, aligning your back relative to your thigh at an optimal level of comfort. When reclined into the zero-gravity position, the complete weight of your back is virtually supported by the backrest which maximizes the intensity of the massage. Feel renewed and refreshed after a hard day or start your morning off on the right foot with the Osaki 4000T.