HUDSON 38 GMT MKII - M1.3.3The 30 ATM case now features a bold box domed crystal, along with a slimmer case and bezel for a cleaner, more balanced look on the wrist. Youll also find a range of thoughtful upgrades, including a much requested lume pip, lug holes, improved brushing and polishing, an on the fly adjustment clasp on the bracelet, quick release end links, box domed sapphire crystal, brighter, longer lasting lume and a 60 click bi directional bezel.