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The Samsung Gear S is a curved, standalone smartwatch. It is mainly focused on style and design, when compared to the regular Samsung Gear smartwatches, such as the Gear 2 and the Gear 2 Neo. The design, which is curved, makes it more of a pleasure to wear as it better fits on your arm. It has a screen size of 2 inches and it’s a Super AMOLED screen with a resolution of 360×480 pixels (300PPI). It also features a UV sensor and a small physical home button, just like Samsung mobile phones.
http://www.sammobile.com/2014/09/03/sammobiles-experience-with-the-samsung-gear-s/