Features: 1. Accurate and Reliable: The oximeter can accurately determine your SpO2 (blood oxygen saturation levels), pulse rate and pulse strength in 5 seconds and display it conveniently on a large digital LED display. 2.Easy to Use: Taking a reading is easy, just clip it on to your finger and turn it on at the press of a button. 3. Practical in Use: The product requires only two AAA BATTERIES that will allow you to use the pulse oximeter right out of the box. 4. Fine Craft: The product is small and light and featured by the one-button measurement, simple appearance, blood oxygen detection anytime and anywhere. 5. Fine Design: The product features the horizontal screen design and humanized design, The horizontal screen can observe and display the numerical value more freely. Specifications: Product: Finger Clip Oximeter Power mode: dry battery Material: ABS PMMA Packing List: Finger Pulse Oximeter * 1 Lanyard * 1 (battery not included)