Apple smart watch

Any apple watch will work with the three network,be aware though that three network doesn't support the cellular version of the watch so you would have to buy the GPS only version and keep your phone near you to make calls and send texts.

It's a UK network provider;

You could always change to Vodaphone,EE or O2,they all support the apple cellular watch.

What is "three provider?"

Thanks fieryjack! Never heard of Three, I guess.