It is a Rado DiaStar Original Chronograph watch. Its specifications are as follows: Brand and Model: Rado - DiaStar Original Chronograph category. Reference Number (on the back cover of the watch): 370.0639.3. Movement Type: Swiss-made Quartz (battery-operated). Watch Functions: Time display (hours, minutes, and seconds). Chronograph (stopwatch/stop) with sub-dials on the face for measuring fractions of time. Date display window at the 4 o'clock position. Water Resistance: Water-resistant up to 100 meters (100m / Water Resistant) as indicated on the dial and back cover. Case and Bezel: The outer bezel is made of scratch-resistant Hardmetal / Tungsten carbide, characteristic of Rado's famous DiaStar series. Case and two additional buttons for the chronograph timer next to the main crown. Back Cover: Stainless Steel back cover with Rado's famous seahorse engraving and the inscriptions: RADO, WATER-RESISTANT, SWISS MADE, and model 370.0639.3. Strap: Stainless steel metal bracelet with a folding clasp. Movement Type: Quartz Material: Stainless Steel Features: Water Resistant Watch Size: 38mm