Limited to 100 pieces. Case Material: 316L Stainless Steel. Case Back: 316L Stainless Steel (shark engraved). Bezel: Unidirect rotatable bezel (360 degrees). Bezel Insert: Ceramic Bezel Insert (black), Aluminum bezel insert (Blue). Crystal: Sapphire glass with AR-Coating. Movement: Seiko SII NH35A Automatic Movement. Water resistance: 200 m / 20 ATM. Luminous: Japan SuperLuminova C3 (Green). Height: 12.0 mm. Diameter: 44.0 mm (without crown). Weight: 120.5 g. Lug Size: 20 mm. Crown: Screw-Down, sterile no engravement. If there is any. Appreciate your kind understanding.