Product Description: Product Dimensions: 7.56 x 6.84 x 3.1 cm (without wristband) Weight: 280 g 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 / Oscilloscope Analysis Measurement Range: Hypertension / Hypotension: 20 mmHg ~ 280 mmHg Pulse: (40 to 200) compatible with beats / min / Accuracy: 3 mmHg 0.4 kPa / Pulse: 3 percent of the measured value within Voltage: 3V Power: 2 * AAA alkaline battery (not included) Package Includes: 1 * piece of blood pressure monitor (without batteries) Description: * Accurate and reliable: the pressure accuracy is 3 mmHg and the pulse measurement accuracy is 5%. It is easy to accurately monitor the health of you and your family. It has advanced measurement technology to give you the most accurate readings. * Easy to read: The blood pressure monitor has a three-color, backlit screen so that you can read clearly even at night. Just press one button to operate, which is 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.