Sennheiser wireless mic plug on transmitter (SKP 500 G4)

Amazon

Plug on transmitter with Phantom Power Professional sound and excellent construction quality Easy and flexible wireless synchronization between transmitter and receiver via infrared Up to 88 MHz bandwidth, up to 32 channels Frequency band: GBW (606 - 678 MHz)

Amazon Marketplace

Plug on transmitter with Phantom Power Professional sound and excellent construction quality Easy and flexible wireless synchronization between transmitter and receiver via infrared Up to 88 MHz bandwidth, up to 32 channels Frequency band: AW+ (470 - 558 MHz)