Designed especially for moist heat therapy to the hands, and may also he used on elbows and ankles. Manual on/off switch Product Size/Type:MuffProduct Dimensions:17" X 8" - Cylinder Shape, Recommendations-Dosage/Usage:15 to 20 minutes at a time, Warnings: Danger: Carefully examine before each use. Discard unit if shows signs of deterioration. Follow instructions packed with unit. Do not use on infants, persons with poor circulation or insensitive skin. Persons with diabetes should be especially careful applying heat. Check skin frequently to avoid burns. Temperature is sufficiently intense to cause burns. Use no pins. Do not wet. Included:Flannel InsertMax Temperature:Up to 170 Degrees Fahrenheit (Unit only has one temperature setting).Electrical Specs: 110 Volts; 105 Watts - 60 HZ A.C. - Cord is 6' in length