The Apex continuous hands-free full-duplex wireless radio headsets combine hearing protection with radio push-to-talk headset capability. Headsets can accommodate hardhats and helmets, deliver clear, secure and interference-free communication with a range up to 1,600 ft. and offer 24 dB of hearing protection for personal safety. They include 24-hour long-life batteries with two-hour recharge times and one-year charge retention. Noise-cancelling microphones and automatic squelch circuits block environmental noise. The units are available in self-contained portable form or can be installed in vehicles, buildings or industrial and construction equipment.