SL-B06: Four pairs of kneading devices in the neck-shoulder-back -waist area, tapping and vibrating in the seat cushion, kneading in the calves splints, adjustable back and calves support. SL-B06-1Massage chair: Two pairs of kneading devices in the neck-shoulder- back area, one pair of massage rollers in the waist, tapping and vibrating in the seat cushion, kneading in the calves splints, adjustable back and calves support.