Whether on the range or in the woods, Walker&';s Isolator Earbuds ensure you hear what matters and tune out what doesn&';t. Designed for shooters, hunters, and other outdoor enthusiasts, these premium earbuds combine an impressive 25 dB NRR (Noise Reduction Rating) to shield your hearing from gunshots and other loud noises. Plus, everything about their appearance and functionality is streamlined and intuitive, from the patented Sure-Lock fin and foam tip system to the ergonomically placed buttons that are both easy to access and sleek in appearance.Features : SAC (Sound Activated Compression) Protects Hearing Against Sharp Retorts OS-R3110 Digital Sound Processing Includes Baffled Silicone and Foam Earbuds (3 Sizes Each) Patented Secure-Lock Sizing Fins (3 Sizes) Removable Lanyard Powered by #10 Batteries Carry Case Included