bluetooth earphone
1、Bluetooth version：V5.0+EDR
2、Transmission power：Class2
3、Frequency range：3.7-4.2GHz
4、Working distance：10meteres
5、Charging time：1 hours
6、Talking/Playing music：20 hours
7. Support playing high quality music
10、Recharging USB cable and beautiful packing included,
11、Support mobile phone with bluetooth function
12、Colour:black, blue,red ,yellow