● Ergonomic SL Track and Auto Shoulder Detection: The massage chair features a 49” long SL track, tracing from neck to hip and thigh for full body relaxation. Besides, its shoulder detection can automatically adjust massage points and ranges, while its back rollers have 3 adjustable widths of 2”/5”/8.5” for better accuracy. ● 3 Level Zero Gravity and Timer Design: Under zero gravity mode, your heart will be lower than legs to reduce pressure on the spine, making your body fully relaxed. The 6.5” retractable calf frame can accommodate people of different heights from 4.92 ft to 6 ft. The Max load capacity is 265 lbs. Plus, the massage chair has a timer to shut off automatically after 5-30 minutes. ● Airbag, Heating and Roller Massage: Farewell to fatigue, the massage chair contains 30 airbags covering shoulders, arms, calves and feet for rhythmic shiatsu massage. Waist heating is offered to warm and soothe intense muscles for good blood circulation. Airbags around legs offer 3 intensities, while the foot rollers allow for 3 speeds for weary feet.● 12 Auto Modes and 6 Massage Techniques: The massage chair features 12 auto modes and 6 massage techniques, including kneading, tapping, shiatsu, clapping, knocking and rolling, to release stress at every acupuncture point. It also has Sport Care mode designed for athletes and fitness people, a Soft mode designed for the elderly, and a Relaxing mode designed for office workers.● Voice Control and 1-Piece Design: The easy-to-operate remote control and voice control function will provide you with great convenience to use this massage chair at ease. Connect it to your phone via Bluetooth, its surround sound equipment can play wonderful music when you’re massaging. Surprisingly, the 1-piece massage chair needs almost no assembly. By the way, the chair has transport wheels for easy mobility. ● Please Note: Inside delivery is NOT provided. If a loading dock is not available at your delivery site, you can request inside delivery for an additional fee. Once you request Inside delivery, please make sure the door is large enough to allow the package to pass through. The Packing Dimension is 52 x 30.5 x 46 inches (L x W x H). The Minimum Doorway Size is 29.5 inches. Note that if you want to return the product, please be sure to keep the original packaging.