Our EJ30 EarHook surveillance series products are lightweight, and durable. They perform in demanding situations with exceptional audio clarity. Designed in USA. This earpiece it's compatible with Vertex Standard Radio Models EVX-531 , EVX-534, EVX-539, VX-231 , VX-261. VX-351, VX-354, VX-451, VX-454 , VX-459, VX-130, VX-131,VX-160, VX-180, VX-210, VX-210A, VX-241 , VX-315, VX-400, VX-410, VX-414, VX417, VX-420, VX-426, VX-427A 1 Year Warranty.
The price was fine however the ear piece is a bit hard and difficult to adjust.
Used this right away. I have never had clearer sound from any other earpiece. It fit great. Felt secure. Best I’ve had.