The Gold Series Advantage is the balance achieved between comfort, noise attenuation and purity of sound. No compromises. No excuses.- Large ear cup designed for extreme noise environment. Maximum hearing protection- Great for range masters and NRA shooting instructors- Best firearms shooting protection in covered or indoor shooting ranges- Ideal for use with all handguns - Scanner compatible for motor sports spectators- Apple iPod, CD, motor sports scanner or radio compatible using a 3.5 mm mini jack. Enjoy high fidelity sound while protecting your hearing- Better than isolation headphones for blocking out unwanted noise while listening to music- NRR 33- Weight: 13.5 oz