A:Answer Hi Tdr,
Thank you for reaching out. I appreciate your inquiry about whether the Galaxy Watch Active has an ECG function. In line with this, the device has a heart rate reading that measures, tracks, and records your heart rate via Samsung Health.
For more information, please visit the user manual on Pages 10, 34 - 37:
https://downloadcenter.samsung.com/content/UM/201903/20190312040541504/WEA_SM-R500_Galaxy_Watch_Active_EN_UM_030619_FINAL_AC.pdf
Should you need more assistance, you may reach us via the following for immediate support:
1. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
2. Facebook Messenger: http://m.me/samsungsupport
3. Twitter: https://twitter.com/messages/compose?recepient_ id=18768513
Reference Number: 1144276211
Thank you for choosing Samsung. Have a great day!
^Chrystel