Personalized Triple Action: This massager uses heat, air compression, and vibration, which can be used individually or combined to help relieve shoulder tension. Cordless Convenience: A built-in 2000mAh rechargeable battery and Type-C charging support use at home, in the office, or while traveling without being tied to an outlet. Adaptable Secure Fit: With an extension strap and adjustable fasteners, the wrap is designed to fit a wide range of body types and can be worn on either shoulder. Effortless Operation: An integrated shoulder-mounted controller provides one-handed access to heat and vibration settings, while the soft ergonomic wrap stays comfortable during daily use. Suggested Attributes Color: Gray Material: Fabric, Plastic, Metal Battery Capacity: 2000mAh Charging Port: Type-C Heat Levels: 5 Vibration Modes: 3 Massage Methods: Heat, Compression, Vibration Recommended Use: Home, Work, Travel