1)Durable:Built
in lithium electricity,the charging interface
is Micro USB,the assigned data lines also support the audio function,support for adapters,mobile power and other equipment to charge.
Official data full of electricity to listen to about *0 hours,volume size
also affects duration of flight.
2)Hand-free:Built-in microphone,can answer the phone.
3)Bluetooth:Bluetooth 2.1 stable connection,Receiving distance of *0 meters4)Well sound:Professional speaker parts from Denmark,Clear sound aloud,have a strong sense o
