The Pro Ears Stealth Bluetooth Elite Electronic Hearing System ear buds provide hi fidelity sound for music and hearing enhancement with noise cancelling technology and noise protection. They are ideal for shooting, cycling, airplanes, hunting, jogging, sporting events, concerts, and industrial applications. The Pro Ears Stealth Elite model comes with two hi tech ear buds that can be set on 3 different volume levels, no volume enhancement, low volume enhancement, and high-volume enhancement.