•Water-proof and sweat-poof

•Connect two devices simultaneously

•Support AAC,MVP codec

•Perfectly compatible with IOS,Android and other operating system

•CVC speech enhancement technology

•ISO display battery

•Engineering design completely fit the human ear

•Quick charge

•About 10hours of continous play

•Phone number readout by prompts

•Voice recognition support for answering a call

•Voice prompt

Specifications:
Bluetooth Version: CSR BT 4.1
Available Distance：up to 10M
music keeping on time: 10H
Battery Capacity: 120mAH  3.7V  lithium battery
Charging Time:3H
Standby Time：≈90H

Speaker Specification：Φ13mm
Impedance：16Ohms
Frequency：20-20K 
Sensitivity：105±3dB
MIC Sensitivity：-42±3dB
Directivity：Omnidirectional