Design and Build
The Siemens SK65 was designed with a particular emphasis on functionality, sporting dimensions of 120 x 47 x 22 mm and weighing 144 g. Its build was relatively bulkier compared to other devices of its time, but this allowed space for its hallmark feature—a full QWERTY keyboard. The keyboard, hidden when not in use, could be revealed by twisting the phone, a unique design choice aimed at enhancing productivity. The phone accepted a Mini-SIM and exhibited a sleek color scheme of black and silver.