The A-2TR Field Pro features our legendary U.S. Patented 40 mm titanium Unibody case with a unidirectional elapsed time ring. Powered by a jeweled, gold plated all-metal precision Swiss movement designed for years of reliability. It features a 5 year battery life, low battery indicator feature for advance warning of a depleted battery, durable screw down crown & case back, scratch resistant sapphire crystal, and 200 M water resistance. A watch for the professional.