Blaupunkt wireless earphone BE45 comes with 220mAh battery, which will provide you 20 Hrs of playtime. Its 10 mm dynamic drivers produces the best high definition sound which optimize the highs & mids. Blaupunkt BE45 is lightweight, it is small enough to weight nothing but big enough to pack a punch. BE45 noise isolating earbuds can block up to 90 percent of ambient noise so that you can enjoy music more and worry less for outside noise