* professional silent disco wireless headphones with 433mhz/863mhz/915mhz ism band, specific channels optional
* transmits audio signal about 300m, through walls, floors and ceilings.
* active noise reduction system for crystal clear sound
* advanced 40mm speaker for outstanding sound performance
* double pll system for ultimate frequency stability
* auto mute and automatic shut-off after 10 minutes of no signal detection, conserve battery life
* funky flashlights gently pulse on as you pump the tunes up
* big channel-indicating logo light, you can see the channel difference by logo color
* soft leatherette ear cushions, and robust headband let you listen to your entertainment in
Extreme comfort, even during long hours of extended wear
* endless headphones can be used simultaneously with one transmitter
* multiple colors available for option
20pcs=1carton carton size:47.5*34.5*46.5cm
