Dr Trust USA Signature Series Fingertip Pulse Oximeter 201 is an accurate way to check pulse rates and blood oxygen saturation levels. A simple one-button design allows for easy operation and a small portable size makes it easy to handle and carry. It is helpful for athletes, medical professionals, and pilots to obtain quick and accurate oxygen saturation readings. The product is water-resistant and contains an audiovisual alarm. Directions For Use: Use as directed by the physician. Want Consultancy call :- 9311225556