The Earphones Offer You 360 Degree Surround Sound With Bass And Noise Correction. Unique Ring-Necked Design, Opening Up a New Area of Bluetooth Earphones. Compatible with Mobile Phone And Bluetooth Devices. Sound And Stable Connection: With Bluetooth 4.0 Technology, The Wireless Transmission Range Is Up To 10 Meters.The Bluetooth Headset Supporting A2Dp, It Provides You Crystal Clear Speeches And Hd Stereo Music.