DR TRUST (USA) PROFESSIONAL SERIES PULSE RATE AND ALARM FUNCTION USFDA AND CE APPROVED: The newly upgraded Dr Trust Finger Pulse Oximeter is an affordable and accurate way to check pulse rates and blood oxygen saturation levels. Simple one-button design allows for easy operation. Small portable size makes it easy to handle and carry. Helpful for athletes and pilots to obtain quick and accurate oxygen saturation readings. This is the best pulse oximeter available for medical professionals. The product is water resistant and contains audio visual alarm. USFDA and CE approved. Dr Trust is a registered trademark of Nectar Biopharma Private Limited. We will actively and aggressively pursue any parties who infringe on our intellectual property rights to the maximum extent allowed by the law. All product designs, packaging designs, product images and text on this page are protected by various Indian and international patents and copyrights. Warranty subject to terms and condition as on our website and available in select modes of Dr trust products only. Breakage of pulse oximeter, drops to the floor, water damage, wear and tear, batteries excluded from warranty. Warranty covers manufacturing defect inside pulse oximeter sensor only. Customer to send pulse oximeter to our service centre for repair. Please do not attempt to repair pulse oximeter yourself /unauthorized repair as this may cause electric shock and will also void warranty.