What are the core functions of this waist massager and how do they work together?

It features four major functions: air pressure massage, red light therapy, constant temperature heat therapy, and high-frequency vibration. The air pressure massage works by inflating and deflating airbags to relieve muscle tension. Red light promotes blood circulation. The heat therapy (about 40-50℃) relaxes stiff tissues. Vibration further alleviates fatigue. The combination of these effects enhances the massage experience.