AnMount Bluetooth Wireless Stereo Headset/Wireless Neckband Design Earphone - Silver Retractable Earbuds: This Amazing Design Provides a Simple, Unique Approach to Cord Management. This Bluetooth Headphone Allows You to Leave Your Phone and Leave Your Hands Free but Not Miss Any Call Battery Life: Standby Time up to 300 Hours, Music Time up to 16 Hours and Talking Time 18 Hours. With Every about 3.5 Hours Charging, You Can Just Enjoy Your Wireless Sport/music Time Without Any Worry Retractable earbuds provide a simple, unique approach to cord management. Plus, the easy access jog button allows for fluid one-touch volume and music control while ear gels provide a comfortable solution for all-day wear and use. AptX compatibility delivers lifelike sound for enjoying music while features such as HD voice and a MEMS microphone allow for crystal-clear voice interactions. Bluetooth Version 3.0. Supported Bluetooth Profiles: A2DP, AVRCP, HFP, HSP AnMount provide