Charge 3 vibrating and losing charge

[Jillkr]

Hi have a new charge 3 - I have synced it & downloaded the software updates. It seemed fine while this was happening.

i have put it on my arm twice , pretty much straight away the screen goes black, the watch seems to vibrate continuously & it loses charge . While it is malfunctioning it cant sync with the app. To stop it vibrating I have to put it back on the charger…

I have rebooted it to no avail. Any solutions ? 
thanks

[AndreaFitbit]

Thanks for getting back to us @Jillkr. I'm sorry to hear that your Charge 3 screen goes black, it vibrates continously and loses charge.  Thank you for letting us know that you have rebooted your device with no avail. I'll be happy to assist. 

Please check the help article: Extend your Fitbit device's battery life.