181°: A harmonious design reminiscent of pocket watches

Our model 181° modifies the classic three hand configuration, and is reminiscent of pocket watch designs. A hand for the hour and minute respectively, are complimented by a large, small-second display and a date display at the 3 o' clock position. Even though we only utilize a single disc for the date, it is still very readable in contrast to other comparable constructions.

 

This is due to the appealing Zeitwinkel lettering as well as our manufacture movement caliber Zeitwinkel ZW0102. Only by using a movement whose size perfectly fits the diameter of the watch, is it possible to install a perfectly positioned small-second and a far off-center, large date display.

 

72 hour running time and high precision time measurement insure that a Zeitwinkel watch owner rarely needs to touch the winding crown. Actually a shame because we put a lot of work into its design as well.

Classic pure, slightly modified

With its small-second display, the Zeitwinkel 181° is a modification of the classic three-hand configuration. One hand each for the hours and the minutes gives you a quick view of the current time. An especially large small-second which can be achieved in this manner only using a movement that has been adapted especially to the size of the watch, also allowing the measurement of shorter periods. The second hand also shows, even at just a glance, that your watch is running perfectly.

The length of the hands was coordinated precisely to the minute markers and the indices that are located at intervals of five minutes. The display of the seconds self-assuredly takes its place at the "6" position without distracting the owner of the Zeitwinkel 181° from reading the time.

 

Thanks to the large size of the ZW0102 manufacture movement, the smaller variant of our date display can also be read well at any time. It reliably moves to the next day at exactly midnight; the date display only needs to be corrected in months with fewer than 31 days. The date display is changed easily using a quick adjustment in the second position. 

The Zeitwinkel ZW0102 caliber

The Zeitwinkel caliber ZW0102 is a mechanical manufacture movement with automatic winding. Developed by Zeitwinkel especially for its watches, it is manufactured in small-quantity lots in Jura (Switzerland) with high precision machinery and meticulous diligence.

 

A robust, accurate, and versatile basic movement that can be equipped either with a sweep or a small second and has a relatively large date display as an option. The running time is 72 hours.

 

The movement has a frequency of 28,800 oscillations, a Glucydur balance, and a robust three-quarter plate that plays a significant role in the mechanical stability of the movement.

 

All plates and bridges are made of German silver, chamfered, and hand-decorated. After thorough quality inspection and five-stage calibration, it is installed in the housing by our watchmakers and subjected to a running test that lasts several days.

The casing

The casing for the Zeitwinkel 181° was developed over a period of 14 months in precise accordance with the Zeitwinkel caliber ZW0102 movement. It is constructed of 1.4435 steel alloy which due to its high resistance to intercrystalline corrosion and non-oxidizing acids, protects the valuable manufacture movement especially well. In addition, this alloy is especially well suited for products that are in continuous contact with the skin.

 

The casings are prefabricated using precision machinery at a traditional German business and construction is then completed, primarily by hand.

 

In this process, 26 parts are assembled in more than 80 individual steps for each case. The casing is water resistant up to a tested pressure of five bar; this is possible due to the back cover which is attached with six screws. 

 

Despite a diameter of 42.5 mm and a height of 10.97 mm, the Zeitwinkel case displays an elegant and well-proportioned appearance. The case's unique design becomes immediately apparent the very first time you take a glance at the side of the watch. In particular, the interplay of polished surfaces with strikingly structured, precisely worked areas provides a Zeitwinkel watch with its distinctive appearance. This clear-cut design is continued on the back with its large window showing the movement as well as in the design of the crown.

The glass

We use sapphire glass on both the front and back sides of our timepieces. Sapphire is extremely hard and scratch-resistant; as a result, it is ideally suited for use in high-quality timepieces.

 

The convex lunette crystal has a diameter of 35.4 mm. It has multiple anti-reflection coatings on the inside so that the hands do not reflect on the interior surface and because a coating on the outside of the crystal could wear down. The 30.9mm case back glass is flat and has an anti-reflection coating on the inside as well.

 

As a result, the time can always be easily read even under extreme lighting conditions. Both crystal and back plate glass are tightly inserted into the casing of the Zeitwinkel watch using a complex sealing system ensuring that the watch is sealed up to a pressure of 5 bar.

The crown

Due to its 12 grooves and large diameter, the crown is very easy to grip. With its easy pull, the crown allows you to set all the functions of your watch and then disappears into a precisely sunken, space-saving notch.

 

Screw-drown crowns are often difficult to handle and must always be wound completely to ensure that the watch remains sealed. Due to a multi-stage sealing system with dual O-rings, we were able to do without a screwed-down crown and even if the crown is raised, we guarantee that water cannot enter the valuable inner workings of your Zeitwinkel watch.

The dial

The face of our Zeitwinkel 181° is a modification of the classic three-hand configuration with hour, and minute hands and a decentral, small-second hand. Instead of a sweep second hand, we have milled out a so-called "small-second" in a finely structured area at the 6 o' clock position.

 

Additionally, we have integrated a date display at the 3 o' clock position. Due to the diameter of our ZW0102 manufacture movement, the size of this display is appropriately large. Of course, the numerals used in the date display are our own Zeitwinkel font.

 

The indexes set every five minutes and supplementing the minute markers have the classic arrow shape and are coordinated precisely to the length of the hands.

 

Our Zeitwinkel 181° is available with a choice of a black, galvanic-blue, or a silver-faced dial.

The hands

Carefully balanced and produced according to our design in one of the best specialized manufactures in Switzerland, silver hour and minute hands and a blued second hand make their rounds. Precisely coordinated to the indexes and the minute markers, they always make the time easy to read.

 

To facilitate this even in varying lighting conditions, we have diamond-cut the large hands, meaning that we have equipped them with two flat surfaces angled to one another over almost the entire length of the hand. This ensures that one side of the hand always reflects the incident light in such a manner that there is a strong contrast to the dial.

 

In turn, the second hand provides this contrast by utilizing a starkly different color than the background. The second hand is fashioned to fit the especially large, small-second cutout in the face. In the black and blue dial versions, the second hand is silver.

The Zeitwinkel leather bracelet

For our calfskin straps only selected skins are processed and refined with a special method (Vollumbugg method) and created with the highest craftsmanship. The result is a supple and extremely durable strap available in noble brown color or classic black.

 

The exclusive use of vegetable colorants, antiallergic lining and upper leather as well as caoutchouc-based glues provide for excellent skin friendliness and a pleasant wear comfort.

 

The leather bracelets are closed with our Zeitwinkel folding clasp which is made of the antiallergic stainless steel 316L. The clasp can easily be opened and closed with one hand and is at the same time as easily adjustable as a pin buckle.

 

Our Zeitwinkel leather bracelets are embossed in a perfect Louisiana alligator pattern. Due to endangered species protection and sustainability reasons we completely abstain from using reptile leather and, therefore, replace it by high-quality hand-sewn calfskin. Those who value the elegance of a »croco bracelet« and have so far abstained from buying one because of the dubious breeding methods will surely be delighted by our Zeitwinkel alligator-effect strap. 

The Zeitwinkel rubber strap

As an alternative to our leather bracelet you can also wear every Zeitwinkel model with our high-quality and durable caoutchouc watch straps.

 

Caoutchouc has proven to be very skin-friendly and extremely durable not only for the use in warmer countries or tropical regions but also in sports. It is waterproof, UV-resistant, tearproof, and dimensionally stable. We have redesigned this antiallergic strap which has been tested for harmful substances from scratch and modelled the synthetic caoutchouc such that it does not bulge even when worn for a longer period of time. The Zeitwinkel logos which are embossed on the inner side of the strap provide for a better ventilation of the skin and improve wear comfort.

 

The Zeitwinkel caoutchouc watch strap is closed with a high precision manufactured folding clasp made of polished stainless steel 316L. It keeps your timepiece safely and securely in place on your wrist and can still be opened and closed with one hand. 

Data Zeitwinkel 181°

Manufacturer Zeitwinkel Montres S.A., CH St-Imier
Model Zeitwinkel 181°
Functions Displays hour, minute, sweep second
and date
Running autonomy >72 h
Case
Material Stainless steel 316 L
Height 11.7 mm
Diameter 42.5 mm
Glass Saphire, convex & with anti-reflection on interior
Back Saphire with anti-reflection on interior
Water resistance 5 ATM
Crown Ø 6.70 mm, Bi-O-ring seal, 12 grooves
Dial Galvanic black / Galvanic silver
Appliqués facetted & diamond-worked
Small second with guilloches
Hands Facetted & diamond-worked
Small second polished / thermally blued
Strap
Leather Hand sewn calfskin leather strap
With flawless Louisiana alligator structure
Brown / black / blue / grey
Rubber Black / blue
Impulse 20 mm
Clasp
Leather strap Folding clasp with Zeitwinkel engraving
Rubber strap Folding clasp with applied logo

Data movement ZW0102

Caliber ZW0102
Version Zeitwinkel 181°
Manufacturer Zeitwinkel Montres S.A., CH St-Imier
Functions Automatic winding
Small second
Balance stop
Quick date setting
Diameter 13½ lines, 30.40 mm
Height 5.70 mm
Winding Rotor, bidirectional winding
Running autonomy >72 h
Bridge and plate material German silver
Bearing jewels 28 – version small second
Balance Glucydur
Spiral Straumann
Frequency (4Hz) 28800 alternations / h
Impact resistance Incabloc
Adjustment Regulated in five stages
Decoration Screws chamfered and polished
¾ plate and balance cock with Geneva
Stripes (Côtes de Genève)
Pearlage on interior surfaces of plates and
bridges
Lining on wheel bridge and rotor
Edges of ¾ plate and bridges
chamfered and polished

Color combinations