Product Features Dual 99 memory groups, IHB heart rate irregularity detection, WHO blood pressure classification Intelligent pressurization, real voice ( optional) Voltage and power detection Product size: 7.56x6.84x3.1 (without strap) Storage temperature: -20°C~50°C Storage humidity: 15%~90% Operating Temperature: 10°C~40°C Operating humidity: 40%~85% Display: LCD digital display Measurement method: pulse sweep method / oscillometric method Measurement range: Hypertension / hypotension: 20mmHg~280mmHg Pulse: (40~200)/min Accuracy: ±3 mmHg (±0.4 kPa) Pulse: ±3% of reading value Voltage: 3V Package included. 1 x Blood Pressure Monitor 1 x Storage Case 1 x User Manual LCD display clearly shows high blood pressure/low blood pressure/pulse rate. This wrist blood pressure monitor supports pulse rate scanning method/oscillometric method. > Each person supports 99 sets of memories and 2 users. Wearable wrist blood pressure monitor Large adjustable wrist strap for comfortable wearing Operation