Model: Kenwood TK-2178/3178 Frequency range: TK-2178: 136-174MHZ TK-3178: 400-430MHZ/440-480MHZ Number of Channels: 128 channels FleetSync PTT ID and Selective Calling Internal VOX enables hands-free operation Voice scrambler (voice inversion scrambling) Meets Mil-Spec 810 C, D, E (includes "blowing rain" spec) Meets international performance/environmental standards IP 54/55 Built-in CTCSS/DTCS LCD display