From a hardware perspective, the devices need to support the same 2.4GHz frequencies ... Some older automotive audio systems won't pair with newer phones because the Bluetooth profile in these ...

We turn all of that into an overall score and use the data to collate our picks. As such, you won't find any models we haven't extensively tested or reviewed listed here, only the best of the best.

The ring's battery also lasts up to a week, so you won't have to worry about it dying on ... In addition to the Oura Ring app, the ring can sync up with other health apps like Apple Health ...