Wireless Microphone System | 4 Microphone Wireless System | Wireless System Condensor - Microphones - Aliexpress
BLX288/SM58 - Wireless Dual Vocal System with two SM58 - Shure USA
Amazon.com: Shure GLX-D+ Dual Band Digital Wireless Handheld Transmitter with BETA 58A Vocal Mic Capsule, 12 hr Battery, for use with GLXD+ Wireless Microphone Systems - Receiver Sold Separately (GLXD2+/B58-Z3) : Everything