The WV1-15023-E5 is a compatible Harris XG-100 Two-Wire Heavy-Duty Surveillance Kit. This kit is designed for law enforcement, military, security, and S.W.A.T. teams. The kit is manufactured using the highest quality components; Knowles surface Mems microphones, Kevlar strong cables, and medical grade coiled acoustical tube. This two way portable radio ear microphone earpiece is ideal for covert communications.