Earnshaw ES-8304-22 Automatic Movement Wandering Hour Function 3 Rotating Discs Skeleton Back Design 2-Year WarrantyProduct Highlights EARNSHAW is named after Thomas Earnshaw, the founder of the marine chronometer (a precise and accurate watch necessary for measuring longitude during celestial navigation). It features an antique and classical design. Product Overview EARNSHAW is named after Thomas Earnshaw, the founder of the marine chronometer (a precise and accurate watch necessary for measuring longitude during celestial navigation). It features an antique and