1.       we are noted amongst remarkable enterprises in this domain, engaged in offering the best grade  firstcare fingertip pulse oximeter. 2.       since 2012, we have been engaged in providing high grade firstcare fingertip pulse oximeter.   uses:oxygen level, or saturation (spo2), is determined by measuring how much light is absorbed as it passes through the fingertip. what are normal levels, and when should i worry? normal spo2 is usually at least 95%. some patients with chronic lung disease or sleep apnea can have normal levels around