Case Material: Aluminum Bronze. Case Back: 316L Stainless Steel. Bezel: Rotatable bezel (360 degrees). Bezel Insert: Ceramic Bezel Insert (Black / Blue). Mineral glass with AR-Coating. Movement: Seiko SII-NH35A Automatic Movement. Strap: Rubber / Leather. Water resistance: 300 m / 30 ATM. Luminous: Swiss SuperLuminova C3 (Green). Dial: Black/ Green/ Blue. Bezel: Black/ Green/ Blue. Diameter: 41.0 mm. Lug Size: 20 mm. If there is any. Appreciate your kind understanding.