the t.bone Tour Guide IL, induction loop for the t.bone Tour Guide, neckloop to wear for hearing impaired, for use in combination with a hearing aid suitable for hearing loops, connector: 3.5mm TRS jack, impedance: 45 Ohm (+/-- 15%@1kHz), input power: 250mW (max. ), Magnetic field: 10mV @1kHz input power produces 200mA/m at a distance of 15cm above the center of the loop, cable length: 80 cm, loop: 45 cm, weight: 57g. Colour: black