New audio brand "(Ling Qi)" earphones. Despite being a new brand, the sound balance and resolution are excellent, allowing you to clearly distinguish each instrument even in songs with multiple instruments. The high frequencies are natural without being too sharp, and the bass has a sense of rhythm and depth. The mid-range (vocals) is also clear and has a lively expressiveness. With a Type-C connection, it can be used directly with iPhones (Type-C models). Furthermore, the included cable with a microphone and remote control makes it easy to make calls and adjust the volume. Main Specifications Brand: (Ling Qi) Driver Diameter: 14.2mm Impedance: 30Ω Frequency Response: 20Hz〜32kHz Sensitivity: 110dB (±3%) Cable: LingShi original 31993 cable (detachable, MMCX) Connection Terminal: Type-C (compatible with iPhone and Android) Material: Aviation grade aluminum alloy housing Distortion Rate: <0.1% / 1kHz / 100dB Functions: With microphone and remote control (supports calls and volume adjustment) Notes This is a used item, so please refrain from purchasing if you are sensitive to such things. Operation has been confirmed and it works without any problems. All included accessories are shown in the photos.