MaximalPower FBI Surveillance Headset Earpiece PTT Mic for VERTEX Radio w/ KEVLAR Enforcement New MaximalPower High Quality 2-Way Radio Surveillance Headset Earpiece for: Vertex 2-Way Radios Kevlar reinforced wires and heavy duty, rugged polycarbonate housed PTT mic. Ideal for demanding covert security applications where sound clarity and earpiece durability are of paramount importance.Excellent for use in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, and noisy environments. Push-To-Talk (PTT) mic with single surveillance style acoustic tube which provides outstanding incoming communications. Metal clip secures the PTT Mic to the user's lapel or collar, conveniently locating it for easy use. Low profile clear ear tube provides outstanding incoming communications. Works in the following devices: FITS THE FOLLOWING RADIOS: VX130, VX160, VX180, VX210, VX210A, VX400, VX410, VX420, VX354, VX451, VX454, VX459, VX230, VX231, VX350, VX351, VX261, VX264, VX417. VX427, VX450, VX426, EVX530/531(eVerge)