Going to a doctor every now and then just to check your pulse rate or oxygen saturation can be tiresome and expensive as well. So quickly and easily monitor your pulse rate and oxygen saturation right from the comfort of your home with the help of this pulse oxymeter from Dr.Morepen. You just need to place your fingertip in the provided slot and you get instant readings of the percentage of arterial hemoglobin (SpO2), pulse rate and pulse strength at the touch of a button. OLED display and 2 Batteries The readings will be displayed on the bright, clear and large OLED display. This pulse oximeter is operated by 2 AAA-size batteries for smooth functioning. Lightweight This pulse oximeter is lightweight and small, so it can easily fit into the side pocket of your handbag.