The SM7300S massage chair is an advanced version of SM7300 with many new features. Built to focus on higher quality massage experience with a variety of auto programs with bigger body range coverage. SM7300S has 4 new programs added such as music sync, and 3 new stretching auto programs. Strong massage performance with lasting performance chair. SM-7300 performs various techniques such as kneading, tapping, tapping + kneading combination, shiatsu, and knocking. SM-7300S 13 automatic massage programs including 4 Kahuna Stretching programs such as yoga-stretching, active stretching, sv-chiro stretching, dynamic stretching and 4 special massage programs such as office person, golfer mode, senior mode, dynamic sports. All massages types are based on shiatsu therapy to give users full massage experience. SM-7300 air-cell system is located in shoulders, arms, waist, with triple hip air-cells that will give you a real relief massage. Delivery Procedure: We use a freight company to ship out your chair. Due to the size of the product, our carriers require an appointment to deliver your chair and signature upon delivery. Once you have placed your order to prevent any delays please provide a direct phone number, so we can provide to our carriers to prevent any delays. Our deliveries take up to 14 business days and white-glove deliveries take 2-3 business days longer than the standard delivery.