You wear the machine, not just the watch. Turn your wrist over and the Tempus shows its hand — an exhibition caseback that lets you watch the rotor spin and the gears breathe, the way the people who love real mechanics insist on. It never asks for a battery. The automatic self-winding movement draws its life from the swing of your own arm, so the watch you put on each morning is already running on yesterday's motion. On your wrist it reads as quiet authority: a 42mm stainless steel case, 12mm slim, the kind of piece that gets a second look across the table without ever announcing itself. Self-winds from your motion — no battery, ever. Exhibition caseback frames the live movement. 42mm stainless steel, a slim 12mm profile. 5 ATM — shrugs off rain and splashes. Backed by a 2-year international warranty and 14 days to change your mind — every dollar back if you do. Shipping is free, tracked, and insured. Add a second watch and the equal-or-lower one comes off automatically at checkout — one for your wrist, one to pass on.