- Vostok Europe Men's Chronograph Watch model 650E721, part of the Systema Periodicum collection, a tribute to the periodic table of elements - Bullhead design with crown and controls located at 12 o'clock for ergonomic handling and greater ease of use - Water resistance of 20 ATM, suitable for swimming and water activities - K1 mineral crystal offering protection against impacts and scratches - Interchangeable silicone strap with buckle closure, comfortable and secure - Coated stainless steel case, robust and elegant - High-visibility black dial with technical and sophisticated details - Inspired by science, it combines precision, innovation, and modern style