Features: brand new and high quality Active Noise Cancellation: Isolate the sound and listen to it, using a dedicated noise reduction chip, through receiving and analyzing the additional noise, the opposite signal is generated in the earphone to cancel it. Highly Flexible Material: The earhook can be adjusted automatically according to different ear types, and it is more comfortable to wear without feeling. Wearing for a day is not tired, no weight. for Ideal for People Behind the Ear: Bone conduction assisted listening Blue-tooth headsets can solve conversation barriers through BT and enjoy the quality of normal hearing. Shocking Sound Quality Experience: Feel the shocking sound quality experience, can analyze the audio excellently, and present the original sound. Super Battery Life: Let the ears enjoy a little more, long for time battery life wireless Blue-tooth headset. Specifications: Material: ABS Color: Black Net Weight: 227g/0.50lbs Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1PC 6D HIFI Wireless Hanging Neck Earphone