Vertex VX-10R 5W 128 Channels Hot Sale Wireless Interphones Description:1. Frequency: FM: 87-108MHz(Receiving) VHF: 136-174.995MHz(Rx/Tx) UHF: 350-390.995MHz(Rx) 400-470.995MHz(Rx/Tx) 480-520.995MHz(Rx)2. 128 channels,25 FM channels Delivery Time and Method: Vertex VX-10R 5W 128 Channels Hot Sale Wireless Interphones