Home » Accessories » Microphones » Hisonic HS8900 4 Channel UHF Wireless Microphone with 100 selective frequencies,a Professional 4-Channel UHF Wireless Handheld Microphone System with Selectable Frequencies » Hisonic HS8900 4 Channel UHF Wireless Microphone with 100 selective frequencies,a Professional 4-Channel UHF Wireless Handheld Microphone System with Selectable Frequencies