Simple button control and large display enable smart operation and clear viewing experience, user-friendly design can fit most, even senior users can operate it effortlessly by themselves, without needing guidance from others. Built-in premium chip can deliver accurate measurements and smart voice prompts, allowing you to start measuring your blood pressure at home with accuracy. Memory function can record 90 groups of measurement results to help remind daily measurement results, practical and convenient. IHB heart rate test can detect arrhythmia when measuring blood pressure simultaneously, energy-saving and freeing you from the hassle of operation. Adjustable wristband can fit wrist circumferences of 13.5 to 19.5 cm (5.31"-7.67"), widely compatible and applicable for family users. USB Charging. It comes with a USB charging cable and this talking blood pressure monitor has a built-in 300mAh lithium battery. You can charge it anytime and anywhere via your computer or power outlet. Main Functions: 1. Measure wrist circumference 2. Easy to use 3. Automated measurement 4. Storage memory 99 group 5. Query memory data in sequence 6. LCD HD display 7. Operation automatically shuts down under 1 minute without operation 8. Accuracy: blood pressure ± 3% heart rate ± 5% 9. Measurement range: blood pressure 0 ~ 280mmHg pulse 40 ~ 199 times / minute 10. voice Great Gift for Health Care It is a good gift idea for your parents, grandpa, grandma's health care