Klein Electronics - 5 Bantam UHF Radios and 5 Signal-K1 Earpieces Each radio includes an earpiece. 1500mAh Li-ion battery. Frequency Range: 400-470MHz; 16 channel; 4 watts / 2 watts; Voice Channel Enunciation. PC Program Freqs, PL, DPL. 3 Programmable Buttons: Voice Encryption Function, Alarm Function, Whisper Transmit Function, High/Low Power. NARROWBAND COMPLIANT.