UTK Far Infrared Amethyst Healing Stone Heating Pad for Back Pain Relief, Memory Function, Auto Turn Off, Adjustable Temperature - 23.5" x 16" Features: Efficiently Relieve Pain: Our heating pad provide a natural method to achieve health without harmful medications and side effects, it can relief various parts pain of the body. Amethyst Healing Stone: The amethyst healing stones can clears negative energy, improve sleep quality, avoid emf radiation, accumulate energy quickly. Use natural methods to achieve health. Far Infrared Heat Therapy: Different from other metal coil heat pads, our infrared pad built-in Carbon Fiber to emit Far-infrared rays. It can penetrate the body tissue (about 3 inches), release heat, effectively relieve muscle soreness and stiffness etc. Wide Range of Use: Size: 23.5" x 16", Comes with a fixed strap, which can be used on chairs and sofas. Suitable for back, lower back, stomach, waist, thighs, knees and other parts that need to relieve pain. Worry-free After-sales: We provide a 3-year manufacturer's warranty for the pad and all accessories, if there is a performance failure due to non-human damage, you can get our after-sales service for free. Specifications: Package Dimensions: 17.01 x 9.84 x 4.25 inches. Weight: 6.51 Pounds Power: AC 110-120V 90 Watts Size: 23.5 x 16 inch Pad Material: Purple Microfiber Fabric Temperature Range: 103°F-159°F Auto Shut-Off Time: 4 Hours Packaging Includes: UTK Amethyst Healing Mat - 1 Smart Controller - 1 User Manual - 1 Travel Bag - 1 Color Box - 1 UTK Far Infrared Amethyst Healing Stone Heating Pad for Back Pain Relief