: Product dimensions: 7.56 x 6.84 x 3.1 (without bracelet) Weight: 280 g Storage temperature: -20 ~ 50 Storage humidity: 15 ~ 90 Operating temperature: 10 ~ 40 C. Operating humidity: 40 ~ 85 Display: LCD digital display Measurement method: pulse sampling / oscilloscope assay Measuring range: Hypertension / Hypotension: 20 mmHg ~ 280 mmHg Pulse: (40 to 200) times / min / accuracy: 3 mmHg 0.4 kPa / pulse: 3 percent of the measured value within Voltage: 3V Power: 2 * AAA alkaline cell (not included) Package includes: 1 * piece of blood pressure monitor (Without batteries) * Accurate and reliable: the pressure accuracy is 3 mmHg and the pulse measurement accuracy is 5. It is easy to closely 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 tri-color, backlit screen so you can read clearly even at night. Just press a 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, thus preventing serious damage to organs and blood vessels.