The Z-Series is a watch about personality and explosions of individuality . Its extremely durable material is used in the aeronautical industry. Water resistant . Sapphire glass is more than just glass. Its strength is close to that of diamond. The glass of the screen can last a lifetime without being damaged. The watch is amazing and refined, with the added benefit of customization with different straps in different materials and colors. Combining a sapphire glass and a clear-screen steel body with all the moving parts inside, the watch has exceptional hardness, which is a major factor for both those around you and the wearer. The silicone strap is flexible, water resistant, has an original design and is very easy to change. Designed and engineered as a multi-page book, the packaging that surrounds our watches is as majestic as its contents.