Thomas Prescher Sculptura Una

The Sculptura Una watches boasts a unique double retrograde indication of time with continuously running display of minutes and jumping display of hours (temporal display). The watch is equipped with a special device for switching between the hands displaying the time and being in a non-temporal resting position (activated by button in crown.

Technical details

Movement
Diameter: 33 mm or 37 mm, including module
Height: 7 mm, including module
Winding: automatic
Power reserve: 40 hours
Number of jewels: 25 bearing jewels
Frequency: 28800 beats per hour (4Hz)
Escapement: Swiss lever escapement
Balance spring: flat hairspring
Shock protection: Incabloc
Decoration: completely hand-engraved and gold-plated
Rotor: 18-karat gold, completely hand-engraved

Displays
Jumping hours (retrograde), minutes (retrograde), each shown by one hand on a semicircular scale, central seconds indication

Case
Material: 18-karat gold
Diameter: 39 mm or 43 mm
Height: 16.1 mm
Glass sapphire glass on front (convex) and on back (flat)
Crown contains button for activating time display

Dial
Material: coloured, painted precious metal
Hands: steal-blue, -white or in different colours
Inlay: 18-karat gold plated
Name plates: 18-karat gold
Number plates: 18-karat gold
Water resistance: 1 atm. (10 meters)

Strap
Hand-cut and –sewn alligator skin uppers and lowers
Buckle: 18-karat gold

Special features
Double retrograde indication of time
Continuously running display of minutes and jumping display of hours (temporal display)
Special device for switching between the hands displaying the time and being in a non-temporal resting position (activated by button in crown)

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