Specification: 
Brand Name: ROMAN
Model Number: R550
Bluetooth Version: 4.1
Standby Time: about 80 hours
Talk Time: More than 4 hours
Music Time: More than 3.5 hours
Effective Distance: 10m
Charging Voltage: AC Input 110-240V， DC output 5V
Optional Color: Black， White， Green， Yellow.
Microphone: Yes

Features:
Support to external headphone cable.
Support to take photo， just press the MFB button twice quickly. The earphone can control your phone to take pictures.

Package Included:
1 X Bluetooth Earphone
1 X Ear-hook
1 X Charging Cable