Features 1、TECHNIQUES: Wired earbuds e is composed of 12mm dynamic driver and 11.6mm PZT bone conduction. Dynamic driver is air conduction in charge of bass and middle frequency. Bone conduction unit is mainly used as a compensator for medium and high frequency and delivers sound in coordination with bone conduction bracket and earphone cavity. 2、HIGH FREQUENCY: The high frequency of ordinary earphone unit is directly transmitted to eardrum through air flow, and it is easy to have burrs when the high frequency boosts the volume sense. Earbuds is transmitted through bone conduction, and all the high frequency burrs are cancelled out in the conduction process. Therefore, earbuds's middle and high frequency have good resolution without harsh. 3、HIFI SOUND: Earbuds has improved separation and soundstage through air conduction and bone conduction. The full range of high frequency space and detail transform memory and emotion into powerful sound in your head. And the sound is highly separated and not cluttered, and the detailed sound is very pleasant to the ear. The clear localization that comes from good separation makes for a very interesting listening experience. 4、WINTER DESIGN: Winter faceplate is inspired by the skiing project, and the lines outline the skiing trajectory, while also more in line with the name of winter, perfectly matches the visual theme of the earphones. 5、COPPER SILVER PLATED CABLE: Wired HiFi earbuds have a 0.78mm 2‑pin single crystal copper silver plated cable, 0.06mm x7x7, 49 core single crystal copper silver plated cable, 4 strand hand braiding threaded cable. Improves instrument sound separation, detail and image. Specification Item Type: Wired Earbuds Material: Silver Plated Copper PIN Pin: 0.78mm 2 Pin Single Crystal Copper Silver Plated Cable Cable Length: 1.2m/3.9ft (±5cm/2.0in) Headphones: 12mm Dynamic Driver and 11.6mm PZT Bone Conduction Composition Configuration: Special 12mm PAR Diaphragm and Dual Chamber Dynamic Structure Principle: High Frequency Bone Conduction Package List 2 x Earbuds 1 x Headphone Cable 1 x Instruction Booklet 1 x Cleaning Brush 1 x Leather Storage Case 1 x Plastic Case 20 x Ear Caps 1 x Metal Plate