Features: 1. High definition display screen made of LED: after installation, the screen size and font can be switched, with four display directions, and pulse rate waveform can be clearly displayed. 2. Multi direction large screen display: humanized detail design, different gestures, different directions, clear large screen, accurate reading. 3. Health alert abnormal alarm: built in blood oxygen upper and lower limit settings, pulse upper and lower limit settings, abnormal is the electric bell reminder. Description: Through continuous and dynamic observation of the body's blood oxygen content and oxygenation, we can find early hypoxemia, provide basis for clinical rescue and nursing, and avoid the progress and development of hypoxemia; at the same time, through the detection of blood oxygen, we can also find the lesions of many other diseases. Oximeter Specifications: Product size: 57.3 * 32.2 * 33.2mm Oxygen saturation: 0% - 100% (± 2%) Pulse rate display: 0-250bpm (1 BPM) Display mode: LED display Working current : ≤ 50mA Operation mode: Intermittent Power supply: Two AAA alkaline batteries Oximeter storage bag Specifications： Product material: EVA Product size: 9.5 * 6 * 4cm Color: black Package Included: 1 * Oximeter OR 1*Oximeter storage bag Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.