Doubling down is so 2013: At its Unpacked event in Barcelona, Samsung has tripled down on smartwatches, unveiling the Gear 2, Gear 2 Neo, and Gear Fit. There's no "Galaxy" in their names because they don't run Android; the first two run Tizen (and are therefore the world's first commercial Tizen devices), and the Fit runs Samsung's proprietary RTOS (real-time OS). Samsung says all three watches will last up to three days between charges -- a massive improvement over the original Gear's ~24-hour battery life.