Oximeter - pulse, to detect blood saturation level (SpO2) and heart rate, with a wide LED display with a live graph of your pulse, alarm sound with saturation level below 90, automatic shutdown, battery status indicator, signal in about 8 seconds, easy to use, quick and painless measurement, light, portable, ideal for travelling, material: ABS, dimensions: 3.6 x 3 x 5.5cm, power supply: 2x AAA (not included)