The Sleek Audio W1 Wireless Accessory is a wireless behind-the-neck headband that transforms your Sleek in-ear headphones into a set of wireless headphones, allowing you to listen to your favorite tunes without messy cables.
The device uses KLEER technology to provide CD-quality lossless audio at distances up to 60'. The included transmitter plugs into any audio source that features a 3.5mm headphone output, and sends the audio to the headset. Up to 4 headsets can listen to an audio stream from a single transmitter.
The wireless accessory can operate for up to 10 hours of continuous use. If the batteries do go out, then it's a quick and simple procedure to re-attach the cable that came included with your headphones to go back to wired listening.