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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!