SIYN Vibration HV-800 Neckband Flexible Bluetooth V4.0 Sports Headset Universal Wireless Stereo Headphones Built-in Mic for All Bluetooth Enabled Device Wireless Technology: Bluetooth CSR V4.0 Vibration alert on call, Earphone battery display on smartphone With the wireless headphone that lets you focus 100% on your run or workout or lifestyle Easy magnetic earphone storage, Noise reduction & Echo cancellation. Playback Controls,Volume Control,Stereo Music with great sound quality