Along with the release of iOS 13.4 , watchOS 6.2 was released. The system fixed bugs, improved performance and added new features.
Full list of changes:
▪️ Built-in in-app purchases on the Apple Watch.
▪️ The ECG application in Apple Watch Series 4 and later is now available in Chile, New Zealand and Turkey.
▪️ Irregular heart rate alerts are now available in Chile, New Zealand and Turkey.
▪️ Fixed a bug due to which music playback could pause when switching from Wi-Fi to Bluetooth.
To update Apple Watch, open the Watch app → General → Software Update on your iPhone . The iPhone should be iOS 13.4