supply of supply of hand-held dual channel wireless cardioid dynamic microphone for vocal singing, speech and live programs having specifications as follows unidirectional, 120 feet range, snr value 103db or better,sensitivity of 1.6 mv or better, uhf, on/off switch, led indicator. acceptable make are sennheiser model:xsw 1-825-dual or akg model:wms470 or eikon model: wm 700 dm or shure model:blx288/sm58-h10 or similar note : no=setsupply of hand-held dual channel wireless cardioid dynamic microphone for vocal singing, speech and live programs having specifications as follows unidirectional, 120 feet range, snr value 103db or better,sensitivity of 1.6 mv or better, uhf, on/off switch, led indicator. acceptable make are sennheiser model:xsw 1-825-dual or akg model:wms470 or eikon model: wm 700 dm or shure model:blx288/sm58-h10 or similar note : no=set,supply of hand-held dual channel wireless cardioid dynamic microphone for vocal singi ng, speech and live programs having specifications as follows unidirectional, 120 feet range, snr v alue 103db or better,sensitivity of 1.6 mv or better, uhf, on/off switch, led indicator. acceptable ma ke are sennheiser model:xsw 1-825-dual or akg model:wms470 or eikon model: wm 700 dm or sh ure model:blx288/sm58-h10 or similar note : no=set [ warranty period: 30 months after the dat e of delivery ] ]