The UltraPAK™ is the most compact full duplex transceiver on the market today, weighing just 70 grams. It features an ergonomic shape that follows the natural curve of the body and a spring-loaded belt clip. UltraPAK™ units are the best solution for users who require simultaneous hands-free communications and prefer to wear a lightweight headset.nn-For use with UltraLITE and UltraLITE HUB wireless systems.nnHeadset styles available for UltraPAKnn-SSTn-Cybern-Monarchn-Max4GnnFeatures:nn-Microphone mute switch.n-Five volume levels.n-Robust 2-pin style headset jack.n-Battery included