1,2 way communication 2,Manufacturer CTCSS/DCS 3,Emergency alert 4,Vox function 5,Voice annunciation(Chinese/English). 2 way communication T-369 New Product Main Features:Emergency alarm Vox function Voice annunciation(Chinese/English)Appearance more beautiful, more bright timbre and more pure. Built-in CTCSS/DCSChannel number: 16Weight:Receive PartTransmit Part