More Speed, Distance, and Throughput speaker 5.0's primary benefits are improved speed and greater range. In other words, it's faster and can operate over greater distances than older versions of speakers. The Mugo portable Speaker offers the loud sound of speakers with the convenience and portability of portable speakers. Freedom Built-in Mic supports hands-free phone calls & outstanding connection range of up to 131 feet for convenient freedom, good built and feel strong in hands. Incredible Battery Life industry-leading power management technology keeps your tunes playing for up to 12 s on a single charge (Varied by volume) Charging time: 2-3 s Built-in microphone: Yes