Horologically speaking, the GMT function was first developed to meet the needs and specifications of aviators and especially pilots, or those who are currently needing to keep track of multiple time zones simultaneously. Working independently of the hour hand, the GMT hand spins around the dial displaying a second time zone as it points to the 24-hour scale on the bi-directional rotating bezel. Not only does the bezel enable the reading of the second time zone, but it can also show a third as rotating it clockwise subtracts hours and counter-clockwise adds hours. Brand: Bell & Ross Model: BR 03-93 GMT Black Reference Number: BR0393-BL-ST/SCA Movement: Automatic Case Material: Stainless Steel Case Size: 42mm Dial: Black Bracelet/Strap: Leather Gender: Men's Watch/Unisex Warranty: Manufacturer's 2 Year Warranty SKU: 32980 Features: Date GMT Shop other pieces in our Bell & Ross collection. For inquiries on the piece please contact: boutique@shsilver.com