UV-8DR Tri-Band Two Way Radio Walkie 136-174/240-260/400-520mhz 8W Thicker 2200mah Battery 128CH Multi-Band Two Way Radio UV8DR Tri-Band 136-174/240-260/400-520mhz, Emergency Alarm, ANI CODE(PTT ID) FM Radio, DTMF, Low Battery Alert, Squelch Tail Elimination, Power. &gt;5W, 128 Channel Annunciation,Auto Power-savimg, Multiple Scanning, Sound Alarm, Keypad lockout Full-function keypad, Program alphanumeric channel name, Large Capacity Li-ion Battery, Busy Channel Lockout(BCLO) Squelch Level Programmable, 128 memory channels