1、Bluetooth version: V2.1+EDR 
2.working frequency:60HZ--18KHZ
3.Battery capacity:320mah
4.Rated voltage: DC 3V 
5.extra power: 3W 
6.music playing time:2-3hrs
7.talking time:1-2hrs
8.Signal to nosie radio:≥90db  
9.Distance: 10m
10.loundspeaker:40mm 
*With bluetooth function and connect with mobile to calling 
*Support TF card and play an music
*Support Line-in  function