gorilla 39Diameter: 39.00 mm; Thickness: 11.00 mm; With crown guards: 43.10 mm; Lug to lug: 50 mm; Water resistance: 100M330FT10ATM; Scratch resistant sapphire, double anti-reflectivePaying homage to 70s sports watches, the Touring Collection blends classic elegance with modern precision and a unique 39mm case desn for superior wearability.