voice amplifier price in Bangladesh

contact 01922333043 Specification: Output RMS 10W wireless distance 50 Meter Sound covers over 500 square meter usage time 10~15hours 2600mAh rechargeable batter 4hour charging speed microphone sensitive: -53dbv/pa frequency response: 120Hz~17kHz Input microphone = -20db 600 ohm Speaker impedance 4 ohm Support MP3 files MicroSD Card up to 32GB USB pendrive, USB disk support Color: Black Size: 108*88*37mm Package include: 1x S611 Mini Amplifier 1x Wall Charger 1x USB charging cable (miniUSB type) 1x UHF wireless Microphone 1x Wire headset microphone 1x Wristband Warranty: 1 year