Reliable and professional: boasting specific algorithms & chip, each individually-tested BP Monitor will provide you with the most trustworthy readings, helping you track your health easily at home. Measuring both systolic and diastolic pressure as well as the pulse per minute. Additionally, this monitor will flag up if it detects an irregular heartbeat. Large clear display: read your real-time blood pressure and pulse rate on the easy-to-read LCD display, featuring a clear traffic light style indicator based on World Health Organization (WHO) guidelines. Self-checking cuff positioning and movement detection features provide a visual symbol on the device for accurate measurements. 240 memory for 2 users: arm bp monitor is providing 2 users with 240 memories (120 per user) and each measurement result will be displayed on the screen, and self stored so that users can easily to find their measuring history by press the MEM button. It’s convenient and economic for parents without buying another monitor. Adjustable comfortable cuff: designed with comfort in mind and made from a high-quality material which collects plenty readings, the upper arm cuff is suitable for standard and large arms from 22 cm to 40 cm (8.7-15.7inches). A diagram is printed on the arm cuff shows the appropriate position to use the cuff. Intimate power supply design: with two power supply modes, in addition to 4 AAA batteries, you can also use the USB cable (included in the package) to supply power at anytime anywhere, which is convenient and fast. This blood pressure machine will self switch off after 60 seconds with no operation, making the experience safer and more environmentally friendly. Power source type: battery powered