You guys really loved our first Field Case so we’re really stoked to introduce the NMK931 Field Watch Case Bundle in Steel Finish - another plug & play mid-sized case that’s really versatile and makes for a great base for a multitude of watch styles and build possibilities. At 38mm, it's modern and wearable - we can't wait to see what you guys come up with!NMK931 Field Watch Case Bundle : Steel FinishCase Specifications:Diameter: 38mmLug to Lug: 46.5mmThickness: 9.2mm (without caseback)Lug Width: 20mmWater Resistance Rating: 100m What's Included? Flat Sapphire Crystal (Clear AR) SKX013 Coin Edge Crown Integrated Bezel and Chapter Ring (Rehaut) Caseback Gasket Pair of 20mm Springbars Parts Compatibility:Fits all SKX013 Crowns and SKX casebacks and is compatible with all our existing dials and hands.