The far-infrared radiation ceramic sheet is designed with a theme of moisture and ease of use to penetrate the heat into the body to the depth of the body, so that the temperature can penetrate deep into the body. Does not include controller in the fit amp (sold separately). Only the main unit can be turned on and off. The fit amp controller (sold separately) includes temperature control (0W to 230W variable) and timer function (15 minutes, 30 minutes, and continuous). Fit Ampos have the following features: The skin does not dry out, so it becomes moist and smooth. The more you sweat it becomes more active, and the more it is applied by far infrared radiation. It can be used in a wide range of areas, and the weight of the special alloy makes it fit to any part of the body. Easy to use and suitable for anyone. It can also be used as a sauna (part or whole body) and is perfect for slimming beauty. External dimensions: 16.1 x 15.4 x 0.6 inches (410 x 390 x 15 mm); Power consumption: 115 W; Weight: 2.2 lbs (1.0 kg).