- the t.bone Tour Guide Micro TX - UHF guide system transmitter; Audio Frequency response: 300 Hz - 3.4 kHz; Radio Frequency response 823-832 and 863-865 MHz; LCD display, integrated rechargeable battery with a runtime of up to 16 hours; Integrated microphone; Connectors: 3.5mm TRS mic input, power connector Micro USB; Neck cord; Weight: 50g; Colour: Grey/Black EUR 77.00 - See more - Buy online