GoPro finally announced its first drone, the Karma, last September, following a teaser campaign that spanned many months. Unfortunately, after the first batch of around 2,500 units arrived in the hands of customers, GoPro discovered a big issue with the Karma - namely that it had the propensity to randomly lose power during use. That's obviously not something you want your drone doing, so the company took the painful (but necessary) step of recalling all the drones it had sold, and halting sales of any other units until it fixed the problem. That may have taken longer than expected, but it...
Source: http://www.gsmarena.com/gopros_karma_drone_is_finally_back_on_sale_almost_three_months_after_its_recall-news-23124.php