ZDNET's key takeawaysRogbid Fusion is a hybrid smart ring and smartwatch. Rogbid is following Casio's lead with the release of the Rogbid Fusion, a hybrid smart ring smartwatch for $50. If users tire of wearing the ring around their finger, an extended strap turns the smart ring into a wristwatch. For $50, the smart ring packs a lot into a little. Where to buy the Rogbid FusionThe Rogbid Fusion is available on Rogbid's website.