Omron 7 Series BP654 Wrist Blood Pressure Monitors feature Bluetooth Smart technology, allowing the user to wirelessly transfer readings to compatible smartphones. By using the free Omron Wellness™ smartphone app, a user can manage unlimited readings in an easy-to-read and intuitive interface - see available images. Omron 7 Series BP Monitors support pairing with multiple devices. Using a compatible smart phone, the user can upload their blood pressure readings to the secure Omron Wellness cloud. There is no limit to the number of readings that may be stored on the cloud. From the app, one can easily detect and track the changes in blood pressure over time. The app is compatible with multiple devices - please see above for a complete list of compatible devices.