Comfortable & Durable 360 Adjustable Cuff: Our blood preassure monitors designed for arm sizes M/L 9"-17", the 360 adjustable XL cuff ensures consistent and accurate results with every use. Built-in airbags are tested for 10,000 cycles of inflation and deflation, offering both comfort and durabilityNote: Incorrect measurements and cuffs that are not the right size for your arm circumference can affect the results. Please carefully read the instructions manual before first use to ensure measurement accuracy. Please contact our friendly customer support team if you have any concerns about the deviceDual Power Options for Home & Travel:Powered by a DC-6V cable (included) or 4 AA batteries (not included), this monitor is perfect for both home and travel use. Its portable design makes it a convenient choice for on-the-go health monitoringAdvanced Memory Storage Data for Two Users: Store up to 90 readings for two users with date and time stamps. The device automatically averages the last three measurements, helping you easily track and manage your blood pressure trendsideal for Home Use & Whats in Box: 1 x blood pressure monitor, 1 x DC-6V cable, 1 x user manual, 1 x box package. If you have any questions about the electronic blood pressure monitor you received, please feel free to contact us, we provide 12 Months Limited 24/7 support service