Main Features: CLINICALLY ACCURATE -- Our Annsky electronic blood pressure monitor has advanced measurement techniques to give you the most accurate reading, which is essential to manage high blood pressure. Powered by 4 x AAA batteries (not included).USB Rechargeable(AC Adapter and usb cable not included). LED DISPLAY & VOICE BROADCAST -- Read your blood pressure results with the large LED display that give you clear results that are easy to read; Use the speaker function to hear your blood pressure results read out loud. EASY TO USE - FULLY AUTOMATIC -- Wrap the cuff around your upper arm, assume proper sitting position,get your Systolic, Diastolic blood pressure and Pulse results with one touch of the button. DUAL USER GROUPS -- Two users have their own independent measurement records, each user can record up to 99 measurements. Helps users to easily track their health, blood pressure and heart rate according to the specific time and date. ADJUSTABLE COMFORTABLE CUFF -- The blood pressure monitor cuff Length 22 cm(8.7 inches) to 32cm (12.6 inches), Fits standard and large adult arms, the best design is only in the measurement process It provides you with precision and comfort. Recommended for home use. PACKAGE INGLUDED & GUARANTEE -- 1 x Blood Pressure Monitor, 1 x Cuff, 4 x Storage Bag, 1 x Instruction Manual, 1 x Gift Box. We provides 1 year Warranty on this Arm Blood Pressure Monitor.Any problems please feel free to contact us,we will 100% solve your problems. Specifications: Double 99 Memory Group: For 2 peoples Operating Temperatures: 5℃-40℃, 15% - 85% RH Storage Temperatures: -20℃-55℃, 10% - 93% RH Power Supply: USB Interface or 4 x 1.5V AAA Battery(not included) Measurement Range Pressure: 0KPa-37.03kpa(0mmHg-280mmHg) Pulse Rate: 40-199times/min Accuracy: 3mmHg Static Pressure: 3mmHg (0.4kPa) Pulse: Within 5% Weight: 400g Size:120x109x65mm Package Includes: 1 x Blood Pressure Monitor (not included AAA batteries and power adapter) 1 x Cuff 1 x Storage Bag 1 x User Manual 1 x Gift Box Get accurate results at the touch of a button. Simply press the Start/Stop button to begin measuring. Take advantage of the speaker function to hear your blood pressure results read out loud. The large LED display shows you results that are as easy to read as they are dependable.