The Blaze light-up Bluetooth: ® headphones have deep bass and high vocal clarity, so the power of the music can really be felt. Beneath both earcups are LED panels. When these are decorated via laser engraving the company logo will light up! The headphones allows the streaming of music from Bluetooth: ® enabled devices providing the freedom of Wireless: music without compromise. The built-in music controls allows switching between music and calls. With up to 3 hours of playback time the headphones include a built-in microphone, micro USB cable and adjustable headband. Can fold inwards for portability. Bluetooth: ® working range is 10 meters (33ft). Bluetooth: ® version 5.0. This item must be laser engraved to reveal the light-up function.