The EX-503H & EX-505UH are Omni & Uni directional lavaliere mics designed for the 400UDR system.
A/T Mini Cardioid Condenser Lavalier Microphone
AE3300 Cardioid Condenser Handheld Microphone
AE4100 Cardioid Dynamic Handheld Microphone
AKG WMS450-C5 Wireless Handheld Microphone System (Band 7)
AKG WMS450-C5 Wireless Handheld Microphone System (Band 8)