There is lots of over-hype about the Apple watch following the Apple event, but like many other Linux enthusiasts, I couldn't care less. According to the analyst firm Statista, Samsung is the number one vendor for Smartwatches.
Samsung has spear-headed Smartwatch development with their Gear line up of watches, with the Samsung Gear S being the latest and very much the greatest of them, getting them 17.65% market share with 1.2 million units sold in 2014. Next on the horizon might be the Orbis Tizen smartwatch, but there are no release details at present.
Above chart is from statista.