Product features ? Adopted aluminum body realizing a high-quality metal feeling. ? Fidelity reproduction of precise sound of high resolution sound source (5 Hz to 45 kHz) ? A powerful and tightened high sound quality is realized with a diameter 11 mmHD axial driver which adopts extra control magnet and super multilayer film (MLF) diaphragm which faithfully reproduces the high resolution sound source. ? Remote control with microphone that can operate smartphone (RP-HDE 5 M) ? You can operate music play / pause without touching your smartphone with your remote control with microphone. You can also make incoming calls while you play inside music while you are inside. ? ? Applicable model: ? Smartphone with diameter 3.5mm / 4 pole earphone / microphone terminal ? L type 4 pole stereo mini plug adoption ? ? When connecting to the 3.5 mm headphone jack other than the above, it does not correspond to the remote control and microphone function, but audio output is possible. ? ? It does not correspond to some models with different standards. ? ? It can not be connected to mobile phone with flat terminal or external connection terminal. ? ? The functions that can be handled depend on the connected playback device. ? Stereo mini plug ? Selectable earpieces (M size attached to earphones) ? Code adjustment holder ? With carrying case