Designed to facilitate wireless coordination and communication, theUL4D UltraLITEfromEartecis a 4-person dual-eared headset system suitable for use on film sets, theater sets, and more. Each headset weighs only 4 oz, can receive audio at a speed of 1.152 Mbps, and can last six hours before requiring a recharge, which you can accomplish via the included charging station. Its microphone can swivel 270. When you’re done, simply pack it all up in the case. These headsets will receive audio at ranges of over 1000′.