The Glycine Combat Sub GL0257 is a Swiss-made automatic dive watch featuring a 46mm stainless steel case with a 12.5mm thickness. Powered by the Glycine GL224 automatic movement, it offers a 38-hour power reserve with hour, minute, second, and date functions.

The watch features a dark blue dial with luminous hands and hour markers for excellent underwater visibility, protected by a scratch-resistant sapphire crystal. The uni-directional rotating bezel and 300 meters (1,000 feet) of water resistance make it well-suited for diving and water sports. It comes fitted with a blue and red satin strap with a 22mm lug width and buckle clasp.