The Hyskore Over & Out Radio Hearing Protector provides entertainment for these times when you are involved in boring, repetitive tasks, or just want to hang out. As a bonus, it protects hearing at a noise reduction rating (NRR) of 21. The set requires 2 AA batteries (not included), has a concealed antenna (in the headband), and is able to receive nearby AM and FM stations. If radio content isn't your style, there is an input jack and interface cord for an iPod or MP3. The Over & Out can also act as secondary amplification - just turn up the volume. The headband makes a secure fit and can adjust up to 3/4" at each ear cup.