1、Bluetooth version: V2.1+EDR
2.working frequency: 60Hz-18KHz 
3.Battery capacity: 1000mah
4.Rated voltage: DC 5V
5.extra power: 4R*3W 
6.music playing time:3-4hrs
7.talking time:2-3hrs
8.Signal to nosie radio:≥90db 
9.Distance: 10m
10.speaker: 40mm*2
*With bluetooth function and connect with mobile to calling 
*Support Line-in and NFC sensor function
*Support TF card and play an music
*It can connect MP3,MP4,PC,Tablet,Mobile and so on