They come with a carrying case featuring a charging system that provides the earphones with three complete charges, or ten hours of battery life. This way, the earphones battery charges each time you put them inside the case. The new Energy Earphones Style 6 True Wireless have been created to listen to music over long periods of time. That is why they have a compact, lightweight design, weighing just 4.5 grams. They also feature Easy Connect and Open and Play functions that turn them on and sync them when the user takes them out of the case. This way, the user only has to put them on and enjoy music.