Product Parameters: N201 voice amplifier: Dimensions: 105*90*35mm/4.13*3.54*1.38inch Weight: 266g Charger: DC 9V / 500mA FM radio frequency: 87.5 MHZ–108 MHZ Output power: 5-30w MAX Speaker impedance: 4Ω The speaker size: 3 inch Frequency response: 100Hz-13,000Hz Support MP3 music format, WAV, WMA Battery: 7.4V/1800 mAh SNR: 80dB Aux-in port: 3.5mm 2.4G wireless microphone: Input Voltage Range: DC3.5V-5.5V Maximum …