NW-ZX1 is a high-resolution Walkman® player lavished with advanced Sony technology. It can play 192 KHz/24-bit audio files, and offers a generous capacity of 128 GB. Besides the solid audio performance, the player is also solidly constructed—cut from a block of aluminum. Buttons of machined aluminum line the side of the case, further evidence of an uncompromising music player. On the back, elastomer with a leather-like texture affords a better grip and enhances usability.