Junkers Jumo 9.21.01.04.M Men's Watch • Automatic • Sapphire Crystal

The Junkers Jumo 9.21.01.04.M is a tribute to legendary German aviation history. As a distinctive pilot's chronograph, it combines historical instrument aesthetics with state-of-the-art watchmaking and first-class materials.

At the heart of this wristwatch is the renowned ETA Valjoux 7750 automatic movement, known for its precision and durability. The robust stainless steel case is protected by scratch-resistant sapphire crystal, while the silver dial with fine stick indices ensures perfect readability.

Special Features of the Junkers 9.21.01.04.M Watch

• Precise Automatic Movement: Equipped with the legendary ETA Valjoux 7750 caliber for ultimate reliability.
• Premium Materials: Scratch-resistant sapphire crystal and a solid stainless steel case guarantee extreme durability.
• Extensive Functions: Professional chronograph with date and day of the week display, as well as a tachymeter scale.

Care Instructions for Wristwatches

Care & Cleaning

• Daily: Wipe the case and strap with a soft, dry cloth to remove dirt and sweat.
• Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, and dry thoroughly.
  Important: Screw down the crown firmly beforehand!!!
• Not water-resistant: Clean only dry or slightly damp, do not use water or cleaning agents.
• Avoid: Aggressive agents, perfume, cosmetics, and heat.
• Leather straps: Do not soak, clean only slightly damp, and let dry away from heat.
• Water resistance: Do not wear while showering or bathing, have it checked annually.
• Battery (Quartz): Have a dead battery replaced immediately.
• Mechanical watches: Service by a master watchmaker every 5 years.

Storage & Handling

• Store the watch separately, not directly with other jewelry (risk of scratching).
• Remove mechanical watches when winding, do not leave the crown pulled out.

Jewelry Care – How to Keep Your Jewelry Beautiful:

• Remove jewelry before showering, bathing, and sports.
• Avoid direct sunlight – wood, leather & co. can fade.
• Hands off – constant touching leaves grease and dirt.
• No aggressive cleaning agents such as chlorine, saltwater, or disinfectants.
• Apply cosmetics and perfume first, then put on jewelry.