- Function: Time/Date- Movement: Quartz- Size of case diameter: 46mm- Case material: Stainless steel- Case bezel: Bi-directional rotating- Case back: Stainless steel screw-in- Crown: Stainless steel screw-down- Water-resistance: 200m (20atm)- Crystal/glass material: Sapphire crystal anti-reflective coating- Strap material: Black reflective perforated textile strap- Case height: 13mm- Weight: 110g- Illumination: Night Vision Tubes (25 years)