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Wireless Stereo Bluetooth Headphones Neckband Headset Wireless Sweatproof In-Ear Sports Running Earbuds-Built in Mic with Noise Cancellation

product advantages:

1.Harman Kardon Signature Sound

2.Retractable Earbuds With Wire Management

3.Stylish & Sleek Design, Jog Button

4.Supported Bluetooth® Profiles - A2DP, AVRCP, HFP, HSP

5.Bluetooth Ver - 4.0

6.Bluetooth Project:CSR

7.Talking time: 4-5 hours . 

8.charging time: 2 hours. 

9.color:black,white,sliver,gold