Double 99 groups of memory, IHB heart rate irregularity detection, WHO blood pressure classification Intelligent pressurization,real voice Product size: 7.56x6.84x3.1 (without wristband) Storage temperature: -20~50 Storage humidity: 15%~90% Operating temperature: 10~40 Operating humidity: 40%~85% Display: LCD digital display Measurement method: pulse scan method / oscillometric method Measurement range: Hypertension / hypotension: 20mmHg~280mmHg Pulse: (40~200)/min Accuracy: 3mmHg (0.4kPa) Pulse: within 3% of reading value Voltage: 3V Packing list: 1* blood pressure monitor We only sell blood pressure monitors, not the other items in the picture. Due to differences in different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, please allow minor size errors.