

Lugs stay on wrists from about 6.5 in (lug-to-lug rule of thumb)
Last checked Oct 26, 2026
View on Heritus’s site ↗Custom Watch 40 mm Automatic. Built-to-order. 3 to 4 weeks turnaround. Specifications: Seiko NH38A Caliber Automatic 41 Hours Power Reserve Vibrations Per Hour 21,600 bpm Bi-directional Winding Rotor Date Display Complication Regulated @ +/-5 Sec Per Day Characteristics: 904L Grade Stainless Steel Front Sapphire Crystal Flat Bezel Insert Screw Down Crown Window Case Back 200m Water Resistant Unidirectional Bezel Signed Crown Solid Stainless Steel Case/Bracelet Dimensions: Case diameter: 40 mm Lug to lug: 48 mm Thickness: 14 mm Lug size: 20 mm Testing: The watch movement accuracy is tested and regulated prior and after assembling. The case is water tested at 20 ATM prior to and at 10 ATM after assembling. Limited Warranty: 12 months limited warranty. The watch includes box, watch instructions, and accessories.
Details and photos come from Heritus’s website, last checked Oct 26, 2026. Specs were read automatically and may contain mistakes.
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