[Simple to Read with Large Backlit Display]-Digital BP machine has a large screen display with clear, supersized number values appear during measurements for convenient and easy reading, allows the visually impaired to feel comfortable using the device. The measuring result, date and time will be written on the screen with large clear numbers. So this is an Perfect choice for the elderly with poor eyesight. Reading blood pressure is no longer a chore. [Advanced Accuracy Measurement]-Upper arm equips with advanced measurement techniques that gives you not just fast reading but more accurate results. Plus, this is effective enough to track , help you know the and alert you to any issues as early as possible, which makes it convenient to track your every day. [Super Easy Operation]- Are you worried the upper arm is too complicated for the elderly? Absolutely not! Super convenient one-touch operation and easy-to-read display allow all the elderly to use our BP machine monitor clearly independently without any assistance. Fully automatic compression and decompression. Just simply wear the cuff, pressing the switch button, and you will get the answer within . Super easy for home use. . [Comfortable Wide-Range Cuff]- This comes with an adjustable & wide-range cuff which fits most adult arms 8.7 - 12.6inch (22cm-32cm). Strong Nylon Sticker around the cuff secure it around the arm and high quality anti-dust material as the surface is easy to clean. The cuff integrated with hook-and-loop fasteners, it is ergonomically designed to provide comfortable experience during the measurement process.It is recommended for home use. colour: black + white Material: Plastic Package Contents: 1 x Automatic Upper Arm Digital Pulse Rate Monitoring Machine (not included 4 x AAA Battery) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.