Genius HS930BT Wireless Bluetooth 4.0 Stereo Headset with Built in Microphone – Adjustable and foldable headband, 40mm Neodymium Driver Unit, 32ohms Impedance, 20Hz ~ 20KHz Frequency Response, 3.5 audio jack enables wired audio input, Built-in 500mAh rechargeable Lithium Ion battery, 10m Range – White, Retail Box , 1 year Limited Warranty