Description:Name: Upper arm blood pressure monitorBrand: JZIKISize: 126mmL*100mmW*53mmHBlood Pressure: 20-280mmHgPulse Rate: 40-165 timesminStorage Memory: Double 99 group memoryPressurization: Automatic Pressurization ModeCuff Size: 22-32cmPower: AAAA batteriesnot includedusb chargingAdaptor: No adapterBacklight: 3 color backlight for chooseVoice Function: English Voice or No Voice for chooseSpecifications:What is backlight mean?It means it has backlight always when measuring. In this way, you can see the screen clearly even on dark. And see more clearly on day time. Also, if your blood pressure is high, the screen show red. if your blood pressure is slight high, the screen show yellow. If your blood pressure is normal, the screen show green. Compared with No backlight model, it is more easier to see the result especially for elder people.What is English Voice And NO Voice mean?It means, it has live English voice or NO voice during the whole measurement. It will tell us how to take measurement and the result. If you do not want the voice, it can also turn off. Please choose you need English voice or NO voice when ordering.Package Included:1x Blood Pressure Monitor