A sapphire crystal case back window reveals the complex inner workings of the Sellita SW330-2 movement inside. An additional black #tide ocean bound plastic woven strap releases easily for on-the-go swapping with the deep brown leather strap. Crafted from bronze that will age and patina beautifully with time and rated at 10 ATM, this travel watch is fit for land, sea and future generations. SKU20273328-sdt-014654071 Movement SW330-2 Automatic Dial Color Detail Brown Case Material Bronze Case Plating: Brushed Bronze Case Size: 40mm Case Thickness: 12.5mm Case Back Plate: Signature Iconic Caseback Plate with Laser-Etched Serial Number Crown Construction:Screw-down Band Material: Leather Strap Strap Color Detail: Brown Leather w/ additional Black Fitted g10 Woven Ocean Plastic Strap Length: 115mm x 75mm Strap Width: 20mm Strap Type: Quick Release Crystal: Flat Sapphire w/ ARSBV Depth Rating: 10 ATM Shinola Lifetime Warranty