Veho VBR-001-S SAEM Wireless Bluetooth Receiver with Track Control and Microphone (Silver) Compatible with standard 3.5mm headphone jack or AUX line in. Convert any headphones into wireless headphones. Stylish Brushed aluminium, ergonomic, micro, clip on design perfect for running, gym, active pursuits and commuting. Rechargeable battery enabling constant 6 hours wireless play back. Volume and track control. Compatible with all Bluetooth enabled devices such as smartphones, tablets, MP3 players Built in microphone with auto call interrupt ensuring important phone calls are never missed.