Product Selling Points 1. Two-in-one heating and massage knee pad - features three modes: heating and vibration. Enjoy all three functions simultaneously or individually. 2. Powered by an environmentally friendly, low-energy lithium-ion battery with a large capacity. Three heating and vibration settings: minimum 45°C, mid-range 65°C, and maximum 75°C. Heating and massage relieve knee fatigue. 3. Charges in 3 hours for extended battery life. With both heating and vibration set to all three settings, battery life can reach 90-120 minutes. 4. Perfect for gift giving. Touchscreen buttons with digital temperature and battery level display for an enhanced user experience. 5. When powered off, and hold the button for 1.5 seconds to enter standby mode. The digital display shows the current temperature. Powers off after 5 minutes of inactivity. Color: As shown Material: Neoprene Package Contents: 1*shoulder pad + 1*instruction manual + 1*charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.