SWISS MADE
Virtuo Swiss Automatic Watch J4.549.L
Virtuo Swiss Automatic Watch J4.549.L
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Product Information
Movement | Swiss automatic watch movement Ronda R150 with hours, minutes and seconds display |
Power Reserve | 40 h |
Date window | Yes |
Dial | Shiny, sunray |
Time indicator | Applied baton hour indices and printed minutes |
Calendar window | Rectangular shape with rounded corners |
Hands | Obelisk shape |
Watch case | Stainless steel |
Case surface | Gloss polished |
Back case | Stainless steel back cover with sapphire crystal and visible movement |
Case diameter | 41 mm |
Case height | 11 mm |
Water resistance | 5 ATM (shower-proof) |
Watch glass | Scratch resistant sapphire crystal with polished edge |
Bezel | Metallized, integrated in the glass |
Strap material | Semi-matt alligator-embossed genuine leather strap |
Band width | 20 mm |
Buckle | Stainless steel with laser-engraved logo |
Adjustment range | Wrist circumference of 186-226 mm |
Interchangeable band | Yes, with quick release |
Gender | Male |
Swiss made | Hand-assembled in Switzerland |
Color | Steel / Gold / Black |
Reference | J4.549.L |
FAQ
What is the meaning of the brand name JOWISSA?
The name Jowissa is a combination of the surname and lastname of the company founder Josef Wyss. He founded Jowissa in the village of Bettlach, Switzerland in 1951. Jowissa has been active and in business without interruption since then.
Is my watch water resistant?
A Jowissa watch is tested for 3 to 20 ATM water resistance depending on the collection.
3 ATM: Watches tested for 3 ATM should not be worn when bathing or showering. They are build to withstand light rain, sweat and brief water contact.
5 ATM: Watches tested for 5 ATM are made to withstand rain, sweat and short swims.
10 ATM: Short dives, swim and other water sports are ok
20 ATM: Deep Dives, swims and other water sports are ok.
Can I exchange my watch band?
YES
What is an automatic movement?
An automatic watch movement, also known as a self-winding movement, is a mechanical movement that harnesses the kinetic energy generated from the natural motion of the wearer's wrist to wind the mainspring. This eliminates the need for manual winding, provided the watch is worn regularly.
The key difference between an automatic and a manual mechanical movement lies in the addition of an oscillating weight, or rotor, in the automatic movement. This semi-circular or shaped weight pivots freely on a central staff and swings back and forth as the wearer moves their wrist. This motion is then transferred through a series of gears to wind the mainspring, the energy source of the watch.
Key components specific to an automatic movement include:
- Oscillating Weight (Rotor): A weighted component that rotates with the movement of the wearer's wrist.
- Winding Train: A set of gears that transmits the rotational motion of the rotor to the mainspring barrel, winding the mainspring.
- Reversing Mechanism: A system, often utilizing pawls or gears, that ensures the mainspring is wound regardless of the direction in which the rotor spins.
Automatic movements retain the intricate mechanics and craftsmanship of traditional mechanical movements while offering the added convenience of self-winding. As long as an automatic watch is worn with sufficient frequency, it will remain wound and continue to function without manual intervention. If an automatic watch is not worn for a period, the power reserve stored in the mainspring will deplete, and the watch will need to be wound manually (typically by turning the crown) to restart.
Jowissa offers a selection of automatic timepieces that showcase the beauty and engineering of these self-winding movements. These watches provide a seamless blend of horological tradition and everyday practicality. We encourage you to explore our collection to discover the elegance and convenience of Jowissa automatic watches.
What is a mechanical movement?
A mechanical watch movement is a purely mechanical system that powers the watch, keeping time through the intricate interaction of various components. Unlike quartz movements that rely on a battery and electronic circuitry, mechanical movements operate using energy stored in a mainspring, which is typically wound manually by turning the crown or automatically through the motion of the wearer's wrist.
The main components of a mechanical watch movement include:
- Mainspring: A tightly coiled spring that stores the energy to power the watch.
- Gear Train: A series of interconnected gears that transmit the energy from the mainspring to the escapement at a controlled rate.
- Escapement: A crucial mechanism that regulates the release of energy from the gear train, ensuring the hands move at a consistent pace. Key parts of the escapement include the escape wheel, pallet fork, and balance wheel.
- Balance Wheel: An oscillating wheel that, along with the hairspring, vibrates at a precise frequency, acting as the timekeeping heart of the movement.
- Hairspring: A delicate spiral spring that controls the oscillation of the balance wheel.
Mechanical movements are appreciated for their craftsmanship, the beauty of their intricate mechanics, and the absence of a battery requirement. They represent a long-standing tradition in horology and are often favored by watch enthusiasts for their heritage and the skill involved in their creation and assembly.
At Jowissa, while we also offer quartz timepieces known for their precision and convenience, our mechanical watches showcase the art and complexity of traditional watchmaking. These movements require regular maintenance, including cleaning and lubrication, to ensure optimal performance and longevity. The subtle sweep of the second hand, characteristic of many mechanical watches, is a visual indicator of the movement's intricate operation.
Can I swim with my watch that is tested for 5 ATM?
A watch with a water resistance rating of 5 ATM (atmospheres) is suitable for everyday use and can withstand splashes, rain, and showering. According to ISO standard 22810, this level of water resistance signifies that the watch can withstand static pressure equivalent to submersion at a depth of 50 meters.
While a 5 ATM rating offers more protection than a 3 ATM rating, it is important to understand the limitations for swimming. The dynamic forces exerted during swimming, such as the movement of your arms through the water and the impact of diving, can create pressure that exceeds the static test conditions.
Therefore, while your Jowissa watch with a 5 ATM rating can tolerate brief immersion and splashes, we generally advise against wearing it for prolonged swimming or diving activities. Consistent exposure to these conditions may compromise the water-resistant seals and potentially lead to water damage which would not be covered under the warranty.
For regular swimming or more intensive water activities, we recommend considering Jowissa models with a higher water resistance rating, typically 10 ATM or more. These models are specifically designed and tested to withstand greater water pressure and are more suitable for such use. Please refer to the technical specifications of each Jowissa watch on our website for detailed information on their water resistance level.
Is sapphire crystal scratch resistant?
Yes, it is highly scratch resistant.
Sapphire crystal is made from a synthetic form of sapphire, which is a very hard material. On the Mohs hardness scale, which measures the resistance of a material to scratching, sapphire ranks at a 9. Only diamond, with a rating of 10, is harder.
This high level of hardnes means that sapphire crystal is much more resistant to scratches from common materials like coins, keys, dust, and even accidental bumps against many surfaces.
However, it's important to know that "scratch-proof" isn't entirely accurate. It is still possible to scratch sapphire crystal if it comes into contact with something equally hard or harder, such as other sapphire materials, diamond jewelry, or certain abrasive materials.
In summary:
- Sapphire crystal is very scratch resistant due to its high hardness.
- It will withstand most everyday wear and tear that could scratch other types of watch crystals.
- While highly resistant, it is not entirely scratch-proof under all circumstances.
So, if your Jowissa watch has a sapphire crystal, you can be confident that it's well-protected against most scratches you might encounter!
Is my watch scratch resistant?
Most of our Jowissa watch crystals are made with mineral glass. Think of it like the glass in your windows, but a bit tougher. It can handle everyday wear and tear pretty well and is more scratch resistant than regular plastic.
However, just like anything made of glass, it's not completely scratch-proof. Really hard or sharp things could potentially leave a mark.
For some of our more premium collections, we also use sapphire crystal. Sapphire is very tough! It's much harder than mineral glass and offers even better scratch resistance. You'll usually find this mentioned in the specific watch description if it has a sapphire crystal.
Let's summarize:
Mineral glass (most Jowissa watches): Good scratch resistance for daily use.
Sapphire crystal (some premium models): Excellent scratch resistance, very durable.
To keep your Jowissa Watch looking its best, it's still a good idea to be mindful of bumps and scrapes against hard surfaces.
Can I wash my leather band with water?
Leather bands should not be washed with water. For cleaning your strap refer to your local watch dealer to get a special leather cleaning product.
Are Jowissa croco style straps of real crocodile leather?
Jowissa's croco style straps are crafted from fine calf leather. These straps are designed to emulate the elegant appearance of genuine crocodile leather through a special embossing process that creates the distinctive crocodile pattern.
This choice of high-quality calf leather allows us to offer straps that are both aesthetically appealing and durable, while also adhering to ethical and sustainable practices. The embossed crocodile pattern provides the desired sophisticated look and texture.
Instruction
Setting Time and Date
Setting time and date on a watch with three hands: To adjust the date pull the crown to position 1 and turn it in the desired direction. To adjust the time pull the crown to position 2 and turn it in the desired direction.

Outstanding! This watch is stylish and elegant, but not ostentatious. Its accuracy is impressive. The service was excellent; this watch shipped from Switzerland and arrived (USA) in two days! This is my third Jowissa purchase, and I just purchased two more as gifts. This is a great watchmaker!
The accuracy of this time piece is great.
As a watch lover I have tried different brands of watches. and I must say that the jowissa watch was really elegant & stylish . It was a perfect match for my office attire and suits the casual wear as well.

Strong Brand Foundation
Jowissa is an independent 3rd generation family run business. Our watches are designed and built by a dedicated team of long term employees, whose expertise is ensuring trustworthiness and exceptional after-sales service.

(Hand) Made In Switzerland
Each Jowissa watch is assembled by hand in Switzerland. We strive for excellence in production and quality control since 1951. Choosing to shop with Jowissa provides you with the distinct advantage of owning a meticulously crafted timepiece that carries the legacy of Swiss craftsmanship, ensuring exceptional quality and attention to detail.

Signature Crystal Cut
A key design aspect of every Jowissa watch is a case covering crystal with a specific cut. Some of our watch crystals are faceted like real diamonds, others come with an elegant round cut. This not only enhances the brilliance of reflecting light, but also imbues each timepiece with a unique and captivating individual style, making it irresistibly attractive to those around you.

Enduring Legacy since 1951
Jowissa's enduring legacy in men's watchmaking is evident in every piece, showcasing a commitment to Swiss precision and a unique design philosophy honed since 1951.