Accurate sleep oxygen monitor tracks your blood oxygen saturation level, heart rate, and body movements every second automatically. Record and store long-term professional data and trends like the sleep lab gathered on your phone, tablet, laptop, and desktop with no subscription fee. Print or share high-resolution PDF or CVS format oximetry reports.  No more oppression, the soft silicone ring sensor makes SleepU comfortable to wear overnight. USB rechargeable, with one charge for two nights for typical use.   *This device is for General Wellness use only and not intended for medical use.