How do I locate my lost Charge 3

[Binga]

While cleaning my house, I noticed at the end of the day my Fitbit was not on my wrist! This was 10 days ago. It's a charge 3. I have looked everywhere, and yesterday got an email telling me the battery is low (13%) and again today(7%). 

Is there a tracking function to locate the charge 3? 

Moderator Edit: Clarified subject

[JohnnyRow]

Or any other free phone bluetooth tracker app, but do it soon before battery is completely dead.

[Binga]

Thank you for your advice/help. I installed a blue tooth finder, and
attempted to locate my fitbit to no avail, so far.
I will try again tomorrow if it still has charge. I should have thought to
ask for help sooner.

[JuanFitbit]

@JohnnyRow Thank you for your help and instructions. 

@Binga , A warm welcome to the Community! Thank you for your message and efforts. 

Just jumped in to add another tip. 
If you think that your Charge 3 is in the same room try to sync it with your Fitbit app. 
If it syncs, and you have the notifications on, try calling to your phone the Charge 3 should vibrate, to notify you about the call. 

Try locating it with the vibration. 

Remember that you'll need to be max of 10 feet from the Charge 3.