【Multi-functional Heat Therapy】 Designed for lower back pain, sports injuries, and cold-sensitive individuals. Features high-quality plush fabric and elastic straps for comfortable wear and easy movement. 【Adjustable Temperature】 Three temperature settings (40°C-60°C) with intelligent temperature control. Powered by a portable 8000mAh battery for up to 3 hours of continuous use. 【Vibration Massage】 Three levels of vibration massage intensity to promote circulation and relieve muscle tension. 【Comfortable Material】 Made of soft, skin-friendly plush with rapid heating film and insulation layer for better heat absorption and retention. 【Versatile Usage】 Suitable for elderly, office workers, athletes, and cold-sensitive individuals. Can be used at home, office, during travel, in RVs, or hotels. 【Clever Design】 Wireless operation with power bank compatibility for on-the-go use. Features an LED display showing temperature range and massage intensity levels. Specifications: Product Dimensions: 28 x 112 cm (unfolded), Extension strap: 11 x 40 cm Weight: 382g (belt only), 440g (belt with extension) Temperature Range: 40°C-60°C Heat Settings: 3 levels (Low: 40°C-50°C, Medium: 50°C-55°C, High: 55°C-60°C) Massage Settings: 3 levels (Intense, Medium, Gentle) Power Input: 5V/2A Rated Power: Less than 10W Cable Length: 30mm (USB-A interface) Battery Capacity: 8000mAh Battery Life: Approximately 3 hours