Customized Comfort with Vibration & Pulse Massage The SKG W9 PRO lower back massager features 3 vibration modes and 9 pulse intensities, providing personalized relief for lumbar discomfort and a deeply relaxing experience. Red Light Heat Therapy for Deeper Relief Equipped with 8 heating massage heads and 31 red light therapy beads, the massager penetrates up to 10mm deep to promote circulation, relieve menstrual pain, and ease muscle soreness. Choose from 3 heat levels (100.4°F - 107.6°F) for full lumbar warmth. Smart App Control & Long Battery Life With a 2450mAh battery, you can enjoy 80-120 minutes of cordless use anywhere — whether working, driving, or relaxing. Easily control settings via the "Future Wear" app for a fully personalized massage experience. Comfortable & Portable Design Made from breathable nylon and skin-friendly silicone, the lightweight belt is easy to wear, clean, and carry, offering ultimate comfort while on the go. Adjustable Fit for All The Velcro strap extends up to 58 inches, making it an ideal gift for anyone seeking relief from back pain.