A:AnswerHere you go, there is where I downloaded mine. It works wonders. I'm using a MacBook, but it says it works for Windows as well.
http://www.samsung.com/hk_en/support/model/SM-R150NZKATGY/
A:AnswerEarbuds must be in the charging case to charge. You can charge them at your leisure. The earbuds last under two hours and the charging case can charge it twice before the case needs to be recharged. You can also put the buds back into the charging case and connect both directly to the power source to charge both the buds and the case, or essentially keep the case charged