ShowTop HBS-902 Bluetooth Headset 4.0 Music Stereo Universal Headphone Neckband Style for Iphone Ipad Samsung Lg Nokia HTC Moto PSP Enhanced Audio and Bass Response Compatible with majority of smartphones or tablets with Bluetooth function Comfortable & Noise Cancellation, unique wearing style, memory alloy flexible neckband Can connect with 2 phones at the same time Bluetooth version V4.0,CSR,Support A2DP+HFP+HSP+AVRCP protocol