The Martenero Edgemere is a watch inspired by marine chronometers, featuring a 40mm stainless steel case, a sapphire crystal, and a Miyota 8245 automatic movement with a 40-hour power reserve. The Edgemere Reserve, an evolution of the Edgemere, adds complications like a power reserve, 24-hour sub-dial, and date, housed in a redesigned case with a compass graphic on the caseback.