Walker's Rope Hearing Enhancer Electronic Earplugs - Walkers' Flexible Ear Bud Neckband features a high gain omni directional microphones for clear sound enhancement. It utilizes HD speakers in the earbuds for wide range audio quality, sound activated compression with high/low modes. It includes three (3) pairs of foam tips (S/M/L); rechargeable Lithium battery; 12in USB charging cable; and EVA storage case.