Historical pieces

UR-105

“The UR-105 is our URWERK Knight; the bezel evokes the breastplate of a knight’s armor, protecting the mechanism from the ravages of time."

Martin Frei

About

Swiss timepieces Satellite watch UR-105 Day

The UR-105

The UR-105 revisits URWERK's iconic satellite indication, which has been an emblematic and instantly recognizable signature element of the brand for 18 years. It is a wandering hour indication based on a carousel which carries the four satellites, each bearing three numerals for the hours.

The hours successively sweep past the minutes scale for an analogue and digital display of the time.

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Insights

HOUR SATELLITE INDICATION AND TURBINE AUTOMATIC

Four satellites, each carrying three hour numerals, successively parade past the minute rail to display the time. The movement’s automatic winding is regulated by dual air turbines.

PEEK CANOPY

Four satellites, successively reveal themselves from under a sublime guilloche black cover in PEEK (PolyEtherEtherketone).

FORGED-ALUMINUM SATELLITES

At the heart of UR-105 time display four forged-aluminum satellites slowly orbit. Each of these satellites is visible during their 60-minute journey along the minute scale.

CARROUSEL IN ARCAP

The carrousel is a critical component and is made from ARCAP, which has been treated with ruthenium then micro-bead blasted.

DUAL AIR TURBINES

The two turbines visible on the back are coupled to the rotor to regulate the winding system of the watch.

WINDING RATE CONTROL LEVER

The winding mode is adjusted via the small lever. In the “FULL” position, the slightest movement will wind up the mainspring. On "STOP" mode, the winding system is disabled.

Specifications

Swiss timepiece, Satellite watch, UR-105

Case

Dimensions

Width 39.5mm x length: 53mm x thickness: 17.3mm / Clockwork Orange: Width 39.50mm x length 53mm x thickness 16.80mm

Crystal

Sapphire crystal

Water resistance

Pressure tested to 3ATM / 100’ / 30m
Movement

Calibre

UR 5.03 Self-winding mechanical movement coupled to turbines / Clockwork Orange: UR 5.02 Self-winding mechanical movement coupled to turbines

Jewels

52

Escapement

Swiss lever

Frequency

28,800v/h, 4Hz

Power reserve

48 hours

Materials

Satellite hours turning on Geneva crosses in beryllium bronze; openworked aluminium carousel; openworked digital seconds; carousel and triple baseplates in ARCAP

Surface finishes

Circular graining, sanding, brushing Chamfered screw heads Hours and minutes painted in SuperLuminova / Clockwork Orange: Perlage and bead-blasting Chamfered and polished screw heads
Indications

Indications

Dial: Hours and minutes / Super-Luminova® treatment on markers, dials, indexes and satellites
Controls

Controls

Two-position winding crown. On the back: Winding-rate control lever