The Pro-Ears ProSlim Gold Electronic Earmuffs have a medium profile cup that is perfect for most firearms. This makes them an excellent choice for the avid pistol shooter or IDPA or IPSC competitor. They are also great for use on outdoor handgun ranges and are comfortable for all day wear. Designed for moderate to high noise environment, these earmuffs have better noise reduction than most foam ear plugs. Apple iPod, CD, motor sports scanner or radio compatible using a 3.5 mm mini jack. Enjoy high fidelity sound while protecting your hearing. These earmuffs also feature a low battery indicator, technology and military grade circuit board.