Automatic movement, Calibre El Primero 4069, 35 jewels, analog dial, black face with luminous bronze cathedral hands and Arabic numeral hour markers, minute markers on outer rim, chronograph sub-dials for 60 seconds and 30 minutes, fixed bronze bezel, green calfskin leather strap, screw down crown, solid case back, round 45mm case size, 14.25mm thickness, tang clasp, water resistant to 100 meters, Swiss made.