QardioArm Wireless Blood Pressure Monitor: Easy to Use Smart Upper Bluetooth Arm Cuff. App-enabled for iOS, Android, Apple Watch. FSA/HSA eligible.

DEVICES COMPATIBLE WITH QARDIO
All devices require the companion QardioApp which works with iOS and Android devices with Bluetooth 4.0 (or later). QardioCore is available on iOS only. It is recommended to use Qardio App with a validated device to ensure maximum reliability
iOS
The Qardio App works with iOS 10.0 or later and Bluetooth 4.0
List of iOS devices validated to work with theQardioArm, QardioBase andQardioCore
– iPhone 5 or later
– iPad Air, iPad mini, iPad 4 Gen or later
– iPod Touch 6th Gen or later
– Apple Watch

Android
The Qardio App works with Android 5 or later and requires access to Google Play
List of Android devices validated to work withQardioArm &QardioBase
– Samsung Galaxy S4 or later
– Samsung Galaxy Note3 or later
– Google Pixel 1 and 2
– Google Nexus 4 or later
– Motorola Moto X/Droid Turbo
– OnePlus One or later
Kindle

The Qardio App works with Kindle devices with Bluetooth 4.0
The Qardio App works with the following Kindle devices
– Amazon Fire HDX 8.9 WAN (4th Gen)
– Amazon Fire HD 6 (4th Gen)
– Amazon Kindle Fire HDX 8.9 WAN (3rd Gen)
– Amazon Fire HDX WiFi (4th Gen)
– Amazon Kindle Fire HDX 8.9 WiFi (3rd Gen)
– Amazon Fire HD 7 (4th Gen)