Product Description: Product Dimensions: 7.56 x 6.84 x 3.1 cm (without wristband) Weight: 280g Storage Temperature: -20 ~ 50 °C Storage Humidity: 15% ~ 90% Operating Temperature: 10 ~ 40 °C Operating Humidity: 40% ~ 85% Display: LCD digital display Measurement Method: Pulse sampling / oscillometric analysis Measurement Range: Hypertension / Hypotension: 20 mmHg ~ 280 mmHg Pulse: (40 to 200) beats / min Accuracy: ±3 mmHg ±0.4 kPa / Pulse: ±3% of the measured value Voltage: 3V Power: 2 * AAA alkaline batteries (not included) Package Includes: 1 * piece Blood Pressure Monitor (without batteries) Description: * Accurate and Reliable: Pressure accuracy is ±3 mmHg and pulse measurement accuracy is ±5%. It's easy to accurately monitor your and your family's health. It features advanced measurement technology to provide you with the most accurate readings. * Easy to Read: The blood pressure monitor has a three-color backlit screen, allowing you to read clearly even at night. Simply press one button to operate, making it very easy for the elderly. * Effective Health Monitoring: You can quickly measure blood pressure and pulse, and detect and monitor abnormal heart rhythms, preventing serious damage to organs and blood vessels.