Sennheiser HSP 4-EW MKE platinum condenser capsule with a cardioid microphone : Amazon.ca: Musical Instruments, Stage & Studio
Amazon.com: Sennheiser Pro Audio Wireless Headset Microphone, Beige (HSP Essential Omni EW) : Musical Instruments
Sennheiser HSP Essential Omni - - The industry standard for productions both large and small – the HSP Essential Omni guarantees a brilliant sound that meets high expectations, has a highly durable
HSP4 New Cardioid Headset Headmic Microphone for Sennheiser Shure Audio Technica | eBay