Movement:Japan Seiko NH35 Automatic Mechanical Movement

Case Material:316L Stainless Steel

Back Material:316L Stainless Steel

Back:Screw-down Back

Case Diameter:47.5mm

Case thickness:15mm

Lug To Lug:51mm

Watch Weight:121g

Strap Material:Rubber Strap/Stainless Steel Strap

Mirror Material:Synthetic Sapphire Mirror+AR Coating

Mirror Size:31.5*3.9mm (Diameter*Thickness)

Crown Style:Screw-down Crown

Crown Diameter:7mm

Bezel Size:38*31.6*1.2mm(Outer Diameter*Inner Diameter*Thickness)

Bezel:Unidirectional Rotation Ceramic Bezel

Luminous:Orange / Red Luminous

Water Resistant:30ATM