Sports men's analog chronograph features fixed stainless steel bezel, scratch resistant sapphire crystal lens. Brown leather strap with screw down crown case; 40mm round stainless steel case equipped with a date display at the three o'clock position and tachymeter scale around outer rim via tang clasp buckle measuring 18mm width. Green dial includes analog markers (indices) and luminous silver-tone hands for optimal low-light legibility. Hamilton H-31 automatic movement, designed on ETA caliber 7753 base with approximately sixty hours power reserve, operates at 28800 vph frequency. Functions include chronograph sub-dials displaying elapsed minutes and seconds (alongside hour and minute analog dials). Water resistant to a depth of one hundred meters or three hundred thirty feet.