Introducing the all new Ellum Manual Wind: Sky. Available now. The Ellum embodies everything that Jack Mason is: a design focused watch brand that is about raising the bar on every level. Visual interest is abundantly present on the Ellum — and that’s not accidental. Though seemingly minimal at first glance, the Ellum was considered at every detail. You’ll discover something new every time you wear it. Visit our site for purchase and more info. Case: 38mm Lug to Lug: 45mm Case Thickness: 9mm Lug Width: 20mm Crystal: Boxed Sapphire with AR Movement: Sellita SW210 Manual Wind. Fully decorated with blue screws Accuracy: Adjusted to +/- 5 sec WR: 5ATM with push-pull crown Strap: Epsom Calfskin. Italian leather that’s commonly used in Hermes, Chanel, etc. Assembly: USA #JackMason