Description: 【Heating】: Equipped with three adjustable heating settings (48°C, 53°C, 58°C), the enlarged 8*15cm heating area effectively relieves shoulder discomfort. 【Massage】: Offers three massage vibration modes suitable for daily care and shoulder discomfort after exercise; two built in motors provide adjustable massage intensity. 【Safety】: Built in 15 minute smart timer prevents overuse, ensuring safe use. 【Convenience】: Easy to use touchscreen controls with a large digital display; simply press and hold the button to easily start and intuitively adjust. 【Comfort】: Features extended shoulder straps (80cm and 29cm) and four pressure locking straps for fit—suitable for both shoulders and most users; polyester elastic fabric provides extra comfort. Specification: Battery Capacity: 2500mAh Controller: Non removable Rated Voltage: 3.7V Rated Power: 5W Input Voltage: DC 5V 1A Number of Motors: 2 Battery Model: LN 974058 Battery Capacity: 2500mAh Charging Time: 3 hours Usage Time on a Full : Approximately 1 hour (4-5 times) Charging : White light flashes while charging; white light stays on when fully charged (can be turned on during charging) No screen lock function Size Chart: 38cmx30cm/14.96inchx11.81inch Package Includes: 1 Shoulder Heating Pad Note: Please allow slightly errors due to manual measurement and different monitors.