VX-820 has 16 or 512 Channel capacity. No PF keys, 4 PF keys or 12 key DTMF pad plus 4 PF keys. LCD or no LCD. Freq range of 134 - 174 MHz (in one radio, no sub-bands). Freq range of 450 - 512 MHz (in one radio, no sub-bands). 700 mW audio output power. Small package (only 4inches tall, 2 inches wide).