Withings Steel HR Manual page 6

A vertical bar may appear on the display of your Steel HR / Steel HR Sport right after the setup.
If you encounter this issue, press the button of your Steel HR / Steel HR Sport for 15 seconds.
Your watch is in Demo Mode / Your watch cycles through different screens on its own
If you encounter this issue, please click here.
If you still encounter this issue, reach out to Customer Service by clicking the Contact us button
at the bottom of the page.
Which devices are compatible with the Steel HR?
Compatible OS

iOS 8.0 or higher

Android 6.0 or higher
The Steel HR is not compatible with Windows Phone.
Compatible Devices