Automatic mechanical chronometer movement with COSC certification. Genuine leather strap or bracelet clasp options. Sapphire crystal display caseback and anti-reflective coating for optimal legibility and scratch resistance under intense light conditions. Analog mixed dial displaying hours, minutes, seconds via central hands alongside sub-dials; day/night hand indicating sunset times across the globe. Date display at 3 o'clock position. Tachymeter scale along the outer bezel circumference aids in measuring short time intervals like speed calculations or elapsed times during events. Water resistant up to 100 meters, suitable for recreational diving activities. Precise second hand with column wheel and large wheels ensuring smooth operation of chronograph functions (30-minute and 12-hour timers). Timeless sophisticated design reflecting heritage of fine Swiss watchmaking.