Seestern S430 Titanium Black Professional 39mm Diver Mens Seiko NH38 Automatic Watch Series: S430 Model: S430.NH38.03 Case Diameter: 39mm Thickness: 12.5mm Lug to Lug: 46.8 mm Lug Width: 20 mm Dial Color: Black Bezel Color: Black Caseback: Solid Case Material: Japanese Titanium Grade 2 Band Material: Japanese Titanium Grade 2 Glass Material: Sapphire Crystal Luminous: Hands and 3D blocks on dial Movement type: Automatic Caliber: Seiko NH38 Vibration: 3 Hz (21,600 BPH) Power Reserve: 41 Hours Water Resistant: 20ATM (200 Meters) Instruction Manual: Yes Weight: 96g Condition: New Chronotiempo SKU: 590300101601