Double 2*99 memory groups, IHB arrhythmia detection, WHO blood pressure classification Intelligent compression, voice broadcast function storage temperature: -20℃~50℃ Storage humidity: 15%~90% operation temperature:10℃~40℃ Operating humidity: 40%~85% Display: LCD digital display Measurement methods: pulse scanning method / oscillographic determination method measuring range: high blood pressure / low blood pressure: 20mmHg~280mmHg pulse: (40~200) / min~max Accuracy: + 3mmHg (+ 0.4kPa) Power Supply: DC 6V High Accuracy Measuring: This wrist blood pressure monitor has passed CE certificate and FDA approved, with advanced intelligent measure technology, it gives precise readings: ±3mmHg(blood pressure); ±5%(pulse rate). Easy to Operate: Simply wrap around your wrist and with a press of the button, fully automatic electronic sphygmomanometer begin to inflate, take the required measurements, ideal for home use. Measure Value and Store Readings: This blood pressure meter measures the systolic/diastolic pressure and pulse rate through the wrist. 2 User mode, record 2 * 90 sets memory, easy to track blood pressure over time. WHO Classification Indicator: WHO color classification BP bar displays how your reading compares to normal home blood pressure levels, green for normal, yellow for coming hypertension, red for hypertension. Compact and Portable: Compact design with a solid storage box, easy to carry. Powered by 2 * AAA alkaline batteries(not included), extremely convenient for traveling use. Packing List Digital Wrist Sphygmomanometer x1 Storage Case x1 User Manual x1 Brand No Brand SKU 100422457_NP-1020718613