The TDP CQ-27 heat lamp is unlike any other heat lamp. While most lamps use a common infrared bulb, the specially engineered TDP CQ-27 features a "black body" emission heating plate which is coated with a proprietary mineral formulation consisting of 33 elements. When activated by a built-in electric heating element, this mineral plate emits a special band of far infrared electromagnetic energy which penetrates deep into the human body. The human body (cells) has a higher absorption efficiency for far infrared energy than near infrared. The emission head can be positioned as low as 12" (for treating feet) to 60". Easy assembly. UL approved.Specifications: