Product Description Frame Color : Black or White 100% sound responsive Volume sensing technology automatically calibrates
(concert volumes to conversation volumes) Wireless – no battery pack Rechargeable lithium ion battery lasts up to 14 hours
Includes micro USB cord and USB charger Light bars illuminate to indicate charge level Includes Microfiber protective bag
LED glasses voice activated is perfect for concerts, party, night clubs, music festivals, holiday parades. Also great as a promotional gift!
The glasses automatically adjust the audio sensor according to the volume of the surrounding environment.