Features: Innovative Waterless Heating Technology Digital Temperature Controller Hot Stone Massage System Simple Electric Plug-in Design Quick Setup: All-in-One Portable Kit Smooth & Sculpted Round Basalt Rock Stones Uniquely Selected Stone Type for Comfort & Maximum Heat Retention Storage / Travel Bag Doubles as Stone Heating Oven Wired Temperature Controller Unit Digital LCD Display with Selectable Temperature Setting Energy Efficient Warming Bag Quickly Heats Up Portable Style Travel Bag, Lightweight & Easy to Carry Melt Away Stress to Soothe Muscle Tension, Soreness, Stiffness Heated Stone Massage Relieves Pains Caused by Sprains & Strains Ideal for Athletes, Home Care and Therapeutic Spa Centers What’s in the Box: Hot Stone Heating Box Digital Temp Controller (6) Large Massage Stones (6) Small Massage Stones Power Cable Technical Specs: Construction Materials: Aluminum, Stone Type: Basalt Rock, Round Heating Time: 30 mins Stone Maximum Heat Retention: 25-35 mins Adjustable Temperature: 70-160 °Fahrenheit (20-70 °C) Large Stone Size: 2.8’’ x 0.7’’ -inches (-Each) Small Stone Size: 1.8’’ x 0.7’’ -inches (-Each) Large Stone Weight: 0.27 lbs. (-Each) Small Stone Weight: 0.17 lbs. (-Each) Power Cord Length: 5.9’ ft. Power Supply: 57W Power Output: 110V, 0.51A Total Box Size (L x W x H): 14.3’’ x 10.6’’ x 3.1’’ –inches Sold as: 1 Weight: 7.28 lbs.