1.[Upgraded KZ ZS10 PRO X]KZ ZS10 Pro X As an upgraded version of KZ ZS10 PRO, we have absorbed the opinions and experiences of the majority of zs10 Pro users, and pursue breakthroughs based on mature technologies and innovate in breakthroughs. While maintaining the previous performance, KZ ZS10 PRO X has more sensitive transient performance and extension, bringing clear and bright sound. 2.[10MM Dynamic Driver+ 4 Upgraded Balanced Armatures]The 10MM dynamic driver improves sensitivity at the 1KHz position, allowing the ZS10 PRO X to render richer musical details. ZS10 PRO X adopts the specially developed 50024s x1 and 300195 x2 black & gold BA, which has enhanced high-frequency processing capability. The high-frequency performance has been improved, with a wider sound field and stronger analytical capabilities, suitable for a variety of music styles. 3.[Exquisite Craftsmanship & Ergonomic Design]The faceplate is made of high quality Aluminum Alloy while the cavity is made from Translucent resin. The cavity is shaped to fit the ear like a custom earbud. Even with intense physical activity, it fits securely in the ear. Comfortable even for long periods of wear. 4.[Improved Detachable Cable] ZS10 PRO X is equipped with flat silver-plated cable. Each wire core is added with 500D nylon wire, which effectively prolongs the life of the cable and reduces the stethoscope effect. The 2-PIN interface allows you to change or upgrade the cable for it at any time. It can also be combined with the Bluetooth cable to change it into a Bluetooth earbud in seconds. (This product does not include bluetooth cable)