Amazon.com: Sennheiser Consumer Audio Compatible with Sennheiser XSW 12-A XS Wireless Lavalier System - SK 20, ME2 and EM 10 Receiver - "A" 548-572 MHz : Musical Instruments
Sennheiser Vocal Set featuring SKM65 handheld transmitter with supercardioid condenser capsule, MZQ1 mic clip and EM10 true diversity receiver (542-578 MHz), XSW65-A | Affinitech Inc.