Cosmo

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.

The expected battery life is 2 to 4 years depending on external factors like heat and cold. Jowissa uses standard silver oxide battery cells in combination with high quality and low energy consuming Swiss quartz movements.

Yes, the length of our steel and ceramic bracelets can be adjusted to fit an individual wrist size. When you order with jowissa.com we shorten the bracelet for you free of charge. Optionally your local watch dealer may also offer the bracelet adjustment as a service.

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.

YES

The ideal watch size depends on your wrist circumference and personal style. As a general rule, for wrists under 15cm, case diameters between 20mm and 30mm look most balanced. For wrists between 15cm and 17cm, sizes from 30mm to 35mm are ideal. For larger wrists, cases 35mm and above provide a bold look. Jowissa offers a variety of sizes, ranging from our petite 20mm mini models to our larger 45mm options for men.

This rule applies to both quartz and automatic watches. You should avoid manually changing the date during these hours (the "danger zone") because the watch's internal gears are already engaging to advance the date automatically. Forcing a manual change while these gears are locked can break the delicate teeth of the movement. Pro tip: To be safe, always pull the crown out and move the hands to 6:30 before setting the date, then reset the time to the correct hour.

This is a deliberate feature called the End-of-Life (EOL) indicator, found in high-quality Swiss quartz movements. It signals that the battery is nearing the end of its life and needs to be replaced soon. Your watch will continue to keep accurate time, but you should visit a professional watchmaker to have the battery changed within the next few weeks.