German Design Awards 2020 Winner - A hollowed titanium case with multiple surface finishes extends the delicacy of the mechanical movement inside to show the exquisite skeleton mechanics. With a transparent face that shows all internal moving parts, has a wow factor for the viewer and wearer alike. | Premium Material - Case of lightweight titanium, which is 30% lighter and 40% harder than stainless steel. 1.2mm sapphire crystal mirror surface, sapphire measures 9 on mohs scale, and second only in hardness to diamond. Combining a titanium case with a sapphire mirror creates a tough watch that is rust-proof, scratch-proof, and impact-proof. | Automatic Mechanical Movement - The customized AAA-level seagull movement is equipped with 25 synthetic jewel bearings, a power reserve of more than 40 hours and a frequency of 21,600 vibrations per hour, ensuring a precise timing from -15 ~ +30 seconds/24 hours. | More Wearing Occasions - It comes with a comfortable silicone strap and a leather strap, providing more matching possibilities for casual, outdoor, business, etc. Titanium case provides a constant temperature wearing experience in any season. If you need a watch that can be worn all year round in different scenarios, this is a perfect choice. | A Perfect Gift - Booklet packaging and page-turning design fulfill the curiosity of every time-explorer, and when you open it, you see a watch and its compartments are nicely located inside of the book. Material entirely made of eco-friendly premium book paper, absolutely a great gift for lover, family and friends.