How is the QRS Sauna different than the Premium Infracore Sauna
1. The QRS has a one year warranty on parts and a lifetime warranty on ceramic heaters.
2. QRS has single wall construction without an air channel that circulates air to the ceramic emitters keeping them running cooler. (As a result the QRS Far Infrared Sauna will emit shorter wavelengths if it is on for extended period of time over 1 hour).
3. QRS does not have casters that allow the sauna to be wheeled around.
4. No Speaker system

Constant Concentrated Infrared
Because Far-Infrared Rays travel in a straight line, conventional Infrared heating elements cannot reach every part of your body. Infra-Core's patented Far-Infrared Heaters are coiled in a concave shape to allow for a much more concentrated range. In addition we use additional emitters to ensure a broader range of Far-Infrared dispersion throughout the sauna. So no matter how you are positioned in a Infra-Core Sauna, your WHOLE BODY is effectively receiving the beneficial Far-Infrared Rays.