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2PCS 20mm 8Ohm 0.5W/1W For Medical Toys Security Plastic Speaker Internal Magnetic Welding Wire Voice Speaker -
25W Bluetooth Voice Amplifier Bird Hunting Speaker Supports USB/TF/FM 1000m Remote Control -
48W Wireless Bluetooth Voice Amplifier with Remote Control Supports USB/TF Card Playback -
ASiNG WM01 2.4GHz Wireless Audio Transmission Electronic Pickup Microphone, Transmission Distance: 50m