2. App set up • On your iPhone, download the Kardia app from the App Store. • Open the Apple Watch app on your iPhone and tap the My Watch tab. • Scroll to find the Kardia watch app and tap it. • Tap the “Show app on Apple Watch” toggle to turn on each feature. • On your iPhone, tap the Kardia app and follow the on-screen instructions.

3. Recording an ECG NOTE: These instructions are specific for those who wear their Apple Watch on their left wrist. If you wear your watch on your right wrist, follow the instructions by swapping left and right. • Tap the Kardia watch app on the Apple Watch to open the application. • In the in-app tutorial, swipe the screen right to left to view the instructions. • With your right hand, grasp your left hand. Rest your right thumb on the outer electrode on the KardiaBand. Push your right thumb with enough force to ensure that the inner electrode is in contact with the skin of your left wrist for the entire duration of the recording. Remain still while recording – your watch, forearm, and hands should not move while recording. Do not use KardiaBand while charging your watch. • Do not take a recording while driving or physical activity. • Do not take a recording if the electrodes are dirty. Clean them first. • Wrist hair may affect the performance of the device. We recommend removing excess hair from your wrist. • Tap the “Record” button. Ensure that your hands and fingers are in the proper position.

The recording takes 30 sec. • After 30 sec, you have the option to Save or Cancel the recording.