XUEMEI Product Product dimensions: 7.56 x 6.84 x 3.1 (without bracelet) Storage temperature: -20 ~ 50 Storage humidity: 15% ~ 90% Operating temperature: 10 ~ 40 C. Operating humidity: 40% ~ 85% Display: LCD digital display Colour: White Measurement method: pulse scan / oscilloscope assay Measurement range: hypertension / hypotension: 20 mmHg ~ 280 mmHg Pulse: (40 to 200) times / min / accuracy: 3 mmHg 0.4 kPa Voltage: 3V Delivery content 1 * piece of blood pressure monitor (without batteries) Dual mode, each of the 99 memory measurements 1. IMMEDIATE MONITORING - This generational monitor with widescreen clinical digital wrist blood pressure monitor cuffs is designed to make your blood pressure monitoring easy, quick and easy anytime. It gives you the systolic and diastolic blood pressure readings along with the 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 reading method. It only gives you the most reliable reading of whether or not you have higher or lower blood pressure than normal. This is of great importance because the accuracy of the readings is very important with high blood pressure medication. 3. HEARTBEAT DETECTOR AND HYPERTENSION INDICATOR - Recording your heartbeat and the signs of high blood pressure is one of the best things to do with widescreen clinical digital wrist blood pressure monitor cuffs. 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 allows you to record the previous reading in case you forget to do so. This will also help you differentiate 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 as you can take it with you anywhere anytime. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it