Radio Hi-Visibility provides workers with a total solution for hearing protection, worker motivation, and visibility. Its bright green earcups provide a highly noticeable contrast against dark settings. Radio Hi-Visibility's exclusive reflective headband glows when exposed to light, increasing visibility and safety on the job. Radio Hi-Visibility provides superior AM/FM sound, with sound level limitation to a safe 82 dBA. Radio Hi-Visibility also includes a 3.5mm AUX input jack and cable, allowing the earmuff to connect to MP3 players and other portable audio devices. 2 AA batteries are included. NRR 25