TRACER Stream V2 (black) MEDIA-TECH MT-3155 (bluetooth) MEDIA-TECH MT-3331 Zorkon BT 2.1 MEDIA-TECH MT-3159 (bluetooth-karaoke) TRACER Powertone GOGEN BPS-528B (KARAOKE - bluetooth) MEDIA-TECH MT-3145 (bluetooth) TRACER Stream V2 (red) MEDIA-TECH MT-3330 Voltron BT 2.1 MEDIA-TECH MT-3148 bluetooth TRACER Stream V2 (blue)