The OPEK 7-30 is a unique external speaker for CB or ham radios that stands apart from other speakers on the market. If you're on the road and need to answer a call flip the switch to instantly cut the audio. That keeps you from having to manually turn down the radio volume. Just flip the switch again and the audio comes back at the same volume you left it at. There's also a switchable noise canceling function to help remove extrenuous static and interference.

Another handy feature of this radio speaker is the mounting bracket has a magnetic base. Just place it on the top of your radio or any magnetic surface and save yourself the hassle of having to mount it with screws in your vehicle. Included is a small adhesive metal plate so you can mount it almost anywhere without putting screw holes in your interior.