Keep a regular health check of your family with this Gurin Black and white oximeter. The most affordable and very accurate device is all manufactured to provide you the most reliable and the fastest readings of your vitals. The size of the oximeter is small enough to let you carry it in the hands without any discomfort. The one-button feature to let you get the readings in seconds and this feature makes it great for easy operation. The bright OLED display with the continuous operation of more than 30 hours makes it best for use with the batteries. The device also displays plethysmogrph wave for measuring the strength of the impulse.