The Ducky One 3 mechanical gaming keyboard is designed to provide the best possible typing experience. It offers gamers and keyboard enthusiasts a luxurious typing feel thanks to its high-quality construction and short response times. The switches are not soldered but mounted on sockets, allowing for easy replacement without soldering. This variant features a 65 percent SF form factor. By omitting the numpad, function keys, and some navigation keys, it takes up less space on the desk than a standard TKL keyboard, although it is less suitable for office applications. To save space, the arrow keys are also recessed.

With this keyboard, the manufacturer introduces its QUACK Mechanics design philosophy, which focuses on four key aspects essential to the typing experience: the keycaps, the housing, the sound, and the stabilizers. All variants of the Ducky One 3 feature high-quality PBT keycaps. This semi-crystalline plastic is particularly popular among keyboard modders because it is abrasion-resistant. Ducky molds the keycaps from two layers of plastic to ensure that the legends remain clearly readable. The keycaps do not develop the usual shine of other plastics that occurs with heavy use, keeping the keyboard looking new for a long time.

A common criticism of mechanical keyboards is their bulkiness. The newly designed housing of the Ducky One 3 is flatter than that of its predecessors and, combined with the three-step feet, relieves wrist strain. To enhance the sound and typing feel, Ducky tested a total of 17 different rubber compounds and selected the most suitable variant for the Q-Bounce Pad. This is combined with an additional layer of EVA foam to effectively dampen resonances during typing and hard keystrokes.