Ancipe Rapoo S500 Bluetooth 4.1 Wireless Stereo Headset With Built-in Microphone White You can enjoy high-quality stereo audio by connecting to Bluetooth-enabled devices, like your smartphone, tablet or PC. The speaker features COM-Ti membrane vibrating technology which delivers a clear and bright treble and a deep and mellow bass. Available in a wide variety of different colors, all with aluminium alloy trimming. The device also works in wired mode by connecting the audio-USB cable. Useful when you run out of power. An empty battery will never stop you now. The hidden omni-directional microphone will automatically pick up your voice with remarkable clarity.