The A-1S Field from Bertucci features a traditionally sized 36mm brushed stainless steel case. A true classic based on its essential function, clean easy to read dial design, value and long lasting durability. Equipped with rugged screw down crown & case back, 100M water resistance, durable Unibody case, long lasting B-Type nylon band, R-Type mineral crystal, precision movement, Swiss super luminous hand & markers and 4 year battery.