Default [Q] Buying HTC One Lime wireless

There is an HTC One here for sale on craigslist. It's black and the seller said they bought it from LIME Wireless in Barbados. Any idea on what variant of the HTC One this will be or how to check? I want to see if it's going to be compatible here in the USA with T-Mobile and if I can flash a T-Mobile rom. I tried searching for Lime Wireless HTC One and HTC One Caribbean version but it didn't turn up anything.