Lumia 521 what is the API?

[Windows Central Question]

I want to use a fit trecker that is connected to bluetooth. It requires an API 4.3+
Thank you for all you smart people out there.

 

[jojoe42]

I want to use a fit trecker that is connected to bluetooth. It requires an API 4.3+
Thank you for all you smart people out there.

What is the name of the fitness tracker? And I also think you might mean Bluetooth 4.3+ instead of API 4.3+

 

[xandros9]

I'm thinking that tracker requires Android 4.3+.

Does it say it is compatible with Windows Phone?