the t.bone Tour Guide TG 16 T, UHF transmitter, 16 switchable frequencies in ISM Band (863 - 865 MHz), up to 3 Systeme parallel, channel and Power LED, internal Lithium Cell Akku, Mono, charging contacts for optional charger system (TG C2), internal microphone, 3,5mm input for external microphone, incl. earmic, band and beltclip