Features:

Adoption of high-end technology to ensure high quality and pure stereo sound transmission.
High speed transmission， portable and wireless.
Innovated double damping balancing technology， present perfect music restoration.
Built-in microphone as well as play， pause， skip， call， answer/reject control buttons， conveniently applied to use.
Free to exercise， move around， commute and enjoy all-day wearing comfort， clearer voice presentation and superior sound quality， without wires to tangle or hold you back.
Support multi-point connection， simultaneously connecting two mobile phones， with one headset.

Specifications:
Bluetooth Version: V2.1+EDR Class 2
Frequency: 2400.0-2483.5MHz
Bluetooth Supported: Headset， handsfree， A2DP and AVRCP
Operation Range: 10m
Talk Time: 6hours
Music Playing Time: Up to 4hours
Stand-by Time: Up to 250hours
Item Diameter: 48mm / 1.89in

Package included:
1 x Wireless Bluetooth Earphone Mini-503
1 x USB Charging Cable
1 x User Manual