Blood Pressure Cuff, Professional Cordless Automatic Wrist Blood Pressure Monitor with Backlit Display & Double mode, Portable BP Heart Rate Monitor, for Home Office Travel Use -Easy to use and Reading:   LCD digital display, legible, Intelligent pressure. You just need to wear it then read your blood pressure. -Accurate and Reliable: Blood pressure monitors have FDA Approved & CE Certified, providing you the most accurate blood pressure data. -Smart Heart Rate Detection:   While measuring blood pressure, it can also detect heart rate. Offer a warm warning for cardiovascular health. -Clear Voice Announcement:   The clear voice function is convenient for people with poor eyesight. You can follow the instructions to set the voice, turn it off or on. -Memory Function Mode: The Memory function of the wrist blood pressure monitor allows you to store up to 99 readings for 2 users, giving you a clear image of your blood pressure over time. -High Quality Cuff Fits: The durable wide range cuff fits wrist 5.4 inch to 10.3 inch in circumference. -Dual Power Supply Mode: It can be powered by battery or charged by USB. Specifications:   Material: ABS   Product Type: Wrist Blood Pressure Monitor   Display: LCD Digital Display   Product Dimensions: 7.56x6.84x3.1 inches   Storage Humidity: 15%~90%   Operating Humidity: 40%~85%   Display: LCD digital display   Measuring method: pulse scanning / oscilloscope assay   Measuring range: hypertension / hypotension: 20mmHg~280mmHg   Pulse: (40 to 200) times / min   Accuracy: ±3mmHg (±0.4kPa)   Pulse: ± 3 percent of reading within   Voltage: 3V   Power: 2 * NO.7 alkaline cell (not included) or a DC 6V/AC adapter   Package including:   1 * Blood Pressure Monitor   1 * Storage Case   1 * User Manual