In 1364, Giovanni de' Dondi built the astronomical clock "Astrarium".
 He is famous for creating his Astrarium, which became the basis for modern mechanical watches.
 This BYTAL™ is a watch that arranges the components of a modern mechanical movement in a straight line.
 It exposes the working principles of the watch better than any other watch and makes it easy for users to understand.
 The essence of the mechanism is expressed minimally by removing exaggerated features and unnecessary elements.
 Combine with the function module and attach to the BYTAL™_670_BRACELET [HOLDER] to use it as a wristwatch.