PROTABLE WIRELESS LOUND-SPEAKER WITH dvd Cassette audio FOR CLASSROOM

Description

WITH dvd Cassette audio RECEIVER SYSTEM OUTPUT POWER:*0W RECEIVED FREQUENCY:VHF******5MHz *5group FREQUENCY RESPONSE:*0Hz**8, **0Hz FREQUENCY STABILITY:**0.**5% HARMONIC INTERFERENCE:>*0dB RECEIVE MODE:FM S/N:>**0dB NOISE IMMUNITY:multiple noise-locking SPEAK SPECIFICATION:BASS4Ω 8" TREBLE4Ω 8" DYNAMIC RANGE:>**0dB POWER SOURCE:BATTERY:*2V , 7A DC *2V 4A POWER PROTECTION as cellphone battery *0.1V warning low power;9V auto-cut DC;*5V full charging auto-protect UP-TIME<3HOURS RECHARGER TIME:**6HUORS TRANSMITTER SYSTEM TRANSMISSION POWER:*5MW FREQUENCY STABILITY:**0.**5% TRANSMISSION FREQUENCY:VHF******5MHz *5group S/N:>**0dB POWER SOURCE:DC9V UP-TIME:MORE THAN 4 HOURS FUNCTION 1.SMD electronic hardware, SMT technological maintain high quality. xxxxx clip transmitter, high sensitivity, prevent howling, clear timbre 3.quartz surge circuitry, steady frequency without disturbance 4.*5group VHF******5MHz, no disturbance in frequency, have large scope for selection. 5.when use the DC sudden power off , embedded storage battery auto-work 6.wire and wireless microphone loudspeaker 7.with digital reverberation 8.play and record 9.USB MP3music play jack