Product size: 7.56 x 6.84 x 3.1 (excluding bracelet) Storage temperature: -20℃～50℃ Storage humidity: 15%～90% Working temperature: 10～40℃ Working humidity: 40%～85% Display: LCD digital Display measurement method: Pulse scan/oscilloscope measurement Measurement range: High blood pressure/Hypotension: 20 mmHg~280 mmHg Pulse: (40~200) times/minute/Accuracy: 3 mmHg 0.4 kPa Voltage: 3V Delivery content 1 First Blood Pressure Monitor (No Batteries Required) Dual Mode, 99 Memory Measurements Each 1. MONITOR NOW - This next generation monitor comes with a widescreen clinical digital wrist blood pressure monitor cuff and is designed to keep you going easily, quickly, and Monitor blood pressure conveniently. It gives you systolic and diastolic blood pressure readings as well as heart rate. 2. Clinical Accuracy - This digital blood pressure monitor features advanced measurement technology to provide you with not only the fastest but most importantly the most accurate reading method. It can only give you the most reliable reading of whether your blood pressure is higher or lower than normal. This is very important because the accuracy of the readings is very important for high blood pressure medications. 3. Heartbeat Detector and High Blood Pressure Indicator - Recording your heartbeat and signs of high blood pressure is one of the best things to do with the widescreen clinical digital wrist blood pressure monitor cuff. Its hypertension indicator shows whether readings exceed internationally accepted guidelines for normal blood pressure values at home. 4. Last Memory Recall - The memory recall feature allows you to record previous readings in case you forget to do so. This can also help you distinguish the number of times throughout the day your blood pressure fluctuates from normal levels to abnormal or alarming levels. 5. You will love this very user-friendly portable device as you can carry it anywhere and anytime.