The FNB-V133LI comes standard with and is compatible with the following Motorola and Vertex two way radios: VX-451U, VX-451V, VX-454U, VX-454V, VX-459U, EVX-531U, EVX-531V, EVX-534U, EVX-534V, EVX-539U, VX-261U, VX-261V, VX-264U, and VX-264V