Amazon.com: Sennheiser Pro Audio Wireless Microphones and Transmitters, SKM 835 835-XSW-A : Musical Instruments
Sennheiser XSW 1-835-A UHF Vocal Set with e835 Dynamic Microphone – Alto Music
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Amazon.com: Sennheiser XSW 2-835-A Wireless Handheld Mic System with e835 Capsule, Wireless Mobile Pack & Charger (4X AA Batteries) Bundle : Musical Instruments