• Hi-Fi earphones have a large planar drive unit and high-performance NdFeB strong magnets, with uniform vibration, high sensitivity, wide frequency response, and large dynamic range, bringing you a high-fidelity stereo effect.
• Noise-reducing headphones are made of German TUYU high-quality ultra-thin flat diaphragm and 0.005mm aluminum foil, and are made of glueless technology. The frequency division reaches 10Hz.
• Wired headset mode, you can use a 3.5mm stereo audio cable to extend the use time, the ear pads are made of comfortable and soft materials, which can be used for a long time and relieve fatigue.
• The open design of the wired headset, large flat diaphragm, uniform vibration, low distortion, strong bass, full and clear mid-range, clear treble.
• The foldable design is used to save your desk space, and can be used to carry the provided bag. Tips: Depending on the size/shape of your head/ears, for audio and wearing comfort, please take off the headphones every 1-2 hours to relax your ears and avoid sultry heat during use environment of.

Used. Item appears to be in used, excellent, working condition. See images for item condition.  Everything included with this item can be seen in the images.