The added appeal of everyday functionality of the Engineer III Marvelight Chronometer joins stellar luminosity, trusted COSC precision and extreme anti-magnetic protection. Limited to 1,000 pieces per execution, it is an automatic, Swiss-made watch and trusted tool built for the pursuit that unites all explorers: purpose.Legendary in sight, micro gas tubes adorn the dial and all three hands and glow automatically in darkness. The Marvelight Chronometer series employs two different techniques to fasten the delicate micro gas tubes above and underneath the dial. The baton-shaped gas tubes proudly represent each hour marker as well as the three hands, while those for the minute track are placed below the dial to maintain the uncluttered dial design.As a certified mechanical chronometer, the movement has undergone rigorous testing by the Swiss Official Chronometer Testing Institute (COSC). It is surrounded by a special mu-metal shield that delivers anti-magnetic protection to an intensity of 1,000 Gauss (80,000 A/m). Going further, the BALL patented Amortiser anti-shock system defends against unexpected shock impact.Made of 904L stainless steel, each case exudes a remarkable polish and standard-setting strength, making the timepiece a perfect fit for both the outdoors and the office. The latest additions to the Marvelight Chronometer family come in a 40mm case size with day/date functionality for the first time in the series.