Caliber UR-1.02

The calibre of the UR-101, which URWERK calls its starting point: two satellites carry the hour numerals across a 180-degree display above a solid, snailed carousel, and the current hour marks the minutes by where it sits on the track. Self-winding, 4 Hz, 48 hours and 28 jewels, behind a Swiss lever escapement. URWERK's product page names it UR-1.02, while the watches' launch releases called it UR-1.01V. URWERK has not published who makes its base.