Product DescriptionProduct Dimensions: 7.56 x 6.84 x 3.1 (without wristband)Storage temperature: -20 ~ 50Storage humidity: 15% ~ 90%Operating temperature: 10 ~ 40 C.Operating humidity: 40% ~ 85%Display: LCD digital displayMeasurement method: Pulse scanning / Oscilloscope analysisMeasurement range: Hypertension / Hypotension: 20 mmHg ~ 280 mmHgPulse: (40 to 200) times / min / Accuracy: 3 mmHg 0.4 kPaVoltage: 3VDelivery contents1 * Blood pressure monitor (without batteries)Dual mode, Each of the 99 memory measurements1. IMMEDIATE MONITORING - This generation monitor with wide-screen clinical digital wrist blood pressure monitor is designed to make your blood pressure monitoring easy, fast and light at any time. It gives you systolic and diastolic blood pressure values along with your heart rate.2. CLINICAL ACCURACY - This digital blood pressure monitor has advanced measurement technology that gives you not only the fastest, but most importantly the most accurate measurement method. It only gives you the most reliable reading of whether you have higher or lower blood pressure than normal. This is of great importance because the accuracy of the readings is very important when taking medication for high blood pressure.3. HEART RATE SENSOR AND HYPERTENSION INDICATOR - Recording your heart rate and signs of high blood pressure is one of the best things to do with the wide-screen clinical digital wrist blood pressure monitor. Its hypertension indicator shows whether the reading exceeds the internationally recognized guidelines for normal blood pressure values at home.4. RECALL LAST MEMORY - The memory recall function lets you record the previous reading if you forget to do so. This also helps you distinguish the number of times your blood pressure fluctuated from normal to unusual or alarming levels during the day. 5. You will definitely love this very user-friendly and portable device because you can take it with you wherever you go at any time.（PA）