Bluetooth wireless technology in the SC-HC55 makes it more convenient to enjoy a wireless connection with an iPhone, iPod touch, iPad or compatible mobile phone. You can hold the player in your hand and play music files without docking. Audio signals that are lost during Bluetooth wireless transmission are compensated, so you get high quality music from your iPhone or iPod touch with fingertip operation.You can enjoy Internet radio “vTuner for Panasonic” with HC series by simply installing the application onto your iPhone or iPod touch. The application is very easy to use and convenient, because you can set it to your favourite radio stations with the HC Series remote control. * vTuner for Panasonic must be purchased from the App Store (iTunes Store).The distortion that is commonly generated by the scattered reflection of sounds from the body surface is dramatically reduced by digital signal processing (DSP) to reproduce highly pure sounds.The slim body of the Compact Stereo System, which is only 69 mm* depth, makes it ideal for setting it onto a shallow shelf or mounting it to a wall. *Withouth Stand.A motion sensor is provided on the top of the SC-HC55. The sliding door can be opened or closed by simply passing your hand over the sensor.