FSL Patriot Electronic Earmuff for Shooting, Hunting Ear Protection Amplifies quieter sounds in your immediate surroundings, while blocking out deafening gunshots These allow you to have a conversation or listen closely to your environment, but still protect your ears 28dB SNR means your hearing is guaranteed protection at all times, whether hunting or shooting at the range Adjustable steel headband fits all head sizes, while ear cushions keep your ears comfortable Up to 30 hours of continuous use with 2 x AA batteries. Batteries included. 3 Year Warranty. Dedicated FutureSoundLab website for warranty and support