Features:1. Accurate and fast readings: consistent results that have been tested and proven. The large OLED digital display can quickly receive blood SpO2, pulse rate and pulse intensity results.2. Graphic and digital display: a simple bar graph to show your SpO2, pulse rate and pulse intensity results.3. Suitable for all ages: The exquisite design allows fingers of various sizes to be put into the cavity of the finger.4. Portable and easy to use: light weight, compact structure, easy to carry and carry, can be used at home or outdoors.5. Health care: This oximeter can check the health of you and your family at all times, which is convenient and easy to use.Specifications:Size: 53*27*28mmWeight: 59 grams (without batteries)Battery specifications: 1.5v 2* AAA batteries (not included)Spo2 measuring range: 70%-100%Spo2 accuracy: 70%-100%, 2%, below 70% undefinedPR measuring range: 25~250BPMPR measurement accuracy: 1BPM/1%Working current: 30MASleep monitoring time: 8 hoursDisplay direction: 4-color OLEDPackage Included:1 * Oximeter1 * Lanyard1 * Manual (without battery)