Easy to Use & Read: This wrist blood pressure cuff one-button operation and is a user-friendly experience, anyone can complete the operation without help, The three-color backlit LCD screen, clear display, and backlight color reflect the range of blood pressure values Premium Chip Technology: Built-in premium chip can deliver precise measurement, this blood pressure monitor supports a total of 180 groups of 2-user data storage, with voice broadcast, and time and date function, allowing you to keep track healthy status of your family Adjustable Cuff: 5.4 into 7.6 in(13.15-19.5cm) adjustable big wrist bp cuff, compatible with a wide range of wrist sizes, knitted woolen-cloth wrist strap, wrist blood pressure cuff is comfortable and skin-friendly, suitable for home use Rechargeable Automatic Blood Pressure Cuff: Built-in 300 mA lithium battery, with USB cable, rechargeable, can be connected to a computer or USB charger charging, the operation is automatically turned off for 1 minut