Nady MHT-16 Portable 16-Channel UHF Wireless Instrument System for Brass and Woodwinds with MH-16 Transmitter No more tripping on cables! Connects your horn to your PA wirelessly. Experience complete freedom of movement while performing. Portable -Take it anywhere! 16 UHF frequencies to match different environments. Compact, portable pedal style MGT-16 receiver with  output jack & volume control - DIP-switch channel selection with transmitter infrared pairing for instant setup. Powered by included DC adapter or two AA batteries (not included) for extra portability. Lightweight MH-16 Horn transmitter clips directly onto bell of horn. Protective rubberized clamp easily locks transmitter firmly to horn. Flexible gooseneck for optimum microphone positioning. High-performance microphone with wide frequency response. Box contents: MGT-16 receiver with dual adjustable  wave antenna, MH-16 horn transmitter, AC adapter, manual.