Large Display: The clear display makes it easy to show readings. Makes readings clearer and users can see results faster. Clear large fonts and high-definition screen provide clear reading High precision and arrhythmia detection: The fully automatic blood pressure monitor has advanced measurement technology and one-button operation to provide you with the most accurate readings. Convenient to track your daily health. Plus, blood pressure monitors are sensitive enough to track heartbeat malfunctions you might not notice One-touch operation and what you get: The blood pressure machine is fully automatic and measures your blood pressure and heart rate with just one push of a "start" button. Customer Satisfaction Support: Our professional team is always ready to help you with any problem. If you have any questions about our blood pressure monitors, please contact us directly. Material: AES Colour: Black Blood sugar measurement range: 0-290 Construction: At 300 MHz, solenoid valve for quick exhaust Arm circumference: 22cm-40cm Atmospheric pressure range: 70 kPa-106 kPa Stable use: 80% Working temperature: -20-55 Specifications: 4 AA batteries, type-c (not included)