The Zowie U2 is a lightweight symmetrical wired mouse at 63 grams with the PAW3395 sensor, representing Zowie's first purpose-built ultralight design rather than a weight-reduced revision of an existing shape. The U series signaled that Zowie was willing to create entirely new form factors rather than only iterating on the EC, FK, S, and ZA families that had defined their catalog for a decade. At 63 grams wired with the PAW3395, the U2 competed directly with the lightest wired mice from any manufacturer. The shape was designed from scratch with competitive play in mind, incorporating lessons from years of professional player feedback across all of Zowie's other lines. The U2 was Zowie's clearest statement that they intended to compete in the modern ultralight market.