TK-278 Long Range Walkie Talkie with DIMF Function Description:1.Frequency range: 136-174MHz 2.Channel : 32 3.Ouput power:5W. 4.Built-in DT/DQT 5.DIMF function 6.Time-Out Timer(TOT) 7.Busy Channel Lockout(BCLO) 8.Priority scan 9.Battery Save 10.Low Battery Alert 11.PC programming12. Back light display13. Operating voltage:7.2Vdc14. Weight:400g(with battery)15. Size:32*135*58mm