The HM4 Thunderbolt doesn’t have a regular interface, instead it has a hand for the hours, another for the minutes and a ‘power reserve indicator.’
Maximilian Büsser’s HM4 Thunderbolt is very different from a traditional wristwatch. It has an aviation-inspired case and engine, with a hand for the hours, another for the minutes and a power reserve indicator. The case blends high-tech titanium for its lightweight and strength with a sapphire centre section offering a view into the engine with its 300+ components.
Its sleek aerodynamic form has its roots in Büsser’s childhood passion for assembling model plane kits. The HM4 Razzle Dazzle and Double Trouble limited editions take the aviation theme even further with real rivets in their fuselages and hand painted nose art inspired by the paintings on WWII aircraft. Click through to see pictures of the “horological machines:”
Click through the thumbnails below to see more images of the intricate accessory.