Casio #MW600F-1AV Men's 100M HD Series Sports Watch with Date Made in USA and Imported 10 Year Battery (under perfect flawless conditions) 100M Water Resistant 3-Hand Analog, Date Display Accuracy: 20 seconds per month, Module 1311 Battery CR2016, Approx. battery life: 10 years, Size of case / total weight: 43.5 x 41.0 x 11.0mm / 39g