1,Main Purpose: Mainly used to measure arterial heme oxygen saturation (SpO2) level and pulse frequency in adult and pediatric patients. 2,Clear Display: The fingertip oximeter has clear display screen, and takes a graphic bar to read SpO2 and heart rate, clear and intuitive. 3,Easy Operation: Turn on the switch, then put your finger into the cavity, pause for a period of time, the oximeter will display blood saturation. 4,Durable Material: The oximeter is made of excellent ABS and silicone, light and durable, and will not hurt fingers when used, safe in operation. 5,Portable Design: The fingertip oximeter has a compact size, which can be measured anytime and anywhere, suitable for home or clinic use. Item Type: Fingertip Oximeter Product Material: ABS, Silicone Product Weight: Approx. 43g or 1.5oz Product Size: Approx. 6.5 x 3.9 x 3.6cm or 2.6 x 1.5 x 1.4in Use: Used to measure arterial heme oxygen saturation Battery: 2 x AAA Battery (not included) 1 x Fingertip Oximeter 1 x English User Manual 1 x Lanyard