1. Panasonic ideas for life RP HJE450 Canal Type Insidephones New slim with virtual cavity technology Anti touch noise slider Custom ear depth fit Frequency response 6Hz 24kHz Outstanding audio and comfort with custom ear depth fit Headphone Features Drive Unit diam in mm 10 7 Impedance Ohm 1KHz 16 0 Frequency Response Hz KHz 6 24 Cord Length m 1 2 Weight g without cord 3 0 MiniPlug diam 3 5mm yes Plug Type Gold Magnet Type Neodymium Colour Black IR Transmitter RF Transmitter DSSS Transmitter Receiver