ComforTrac Cervical Traction Device Couches The other button is for Nerve Sensory Evaluator Access The other button is for volume warrants that the Portable Oxygen Concentrator POC (the Product) will be free of defects in workmanship and or material for the following period: Portable Oxygen Concentrator five (5) years from date of shipment * Battery 1 year from date of shipment The angle of incline can easily be adjusted to 10¯ 15¯ or 20¯ as advised by a healthcare provider * Patented hand pump makes it easy to increase or decrease traction force * A quick release button is conveniently located next to the high quality guage on the hand pump * Pushing the quick release button allows the user to either lower the force to attain proper traction or release the traction force completely * Contouring memory foam headrest cradles the head for maximum comfort throughout your treatment * Forehead strap assures a comfortable and appropriate fit during treatment * Two adjustable clips on the back of the unit allow each wedge to be moved in or out to provide a custom fit *