Key specifications and features of the device: • Usage: Designed as a portable massage backrest that can be easily placed on an office chair, home chair, or in the car. • Massage Techniques: Supports multiple techniques including Shiatsu, Kneading, Tapping, and Vibration. • Massage Balls: Equipped with 12 massage balls for the back and neck. • Heating Function: Features infrared heat therapy to help relax muscles and relieve stiffness.