5 Watts, VHF 136-174MHz, 256 channels, (Keypad Programmable) Model 580 Display Reverse: The 580 supports a 180-degree reverse of the displayed contents so as to adapt to various work conditions. With this feature, you can learn radio statuses even without talking on the radio. 256 Channels &32 Zones: This channel capacity makes the radio suitable for large radio system applications of systems where channel capacity can be used to increase and simplify unique calling requirements. Where larger numbers of channels are being used, they can be grouped into smaller blocks to allow for easier navigation and segregation. Battery Save:The Battery Save feature is automatically activated once no activity on the channel and no operation performed, for extended operation time. On high power the1200mAh high capacity Li-ion battery can secure a battery life up to 9 hours on a 90/5/5 operation. (90% of the time in standby, 5% of the time transmitting, 5% receiving) Voice Operated Transmit (VOX):Enjoy the convenience of hands-free operation when used with optional accessories. Programmable Wide & Narrow Band Channel Spacing:The feature enables flexibility and easy migration of channel spacing requirements when the need arises, with no need to buy new radios. You can program each channel with 12.5 or 25 KHz spacing.