2,Model:HMSC21-new

3,Japan Seiko 24 Jewels NH36 Automatic Movement

4,Dial Color:Black / Gray

5,Sapphire Crystal Mirror With Anti Reflection Coating

6,Case Material:Solid 316L Stainless Steel

7,Unidirectional Rotation Chronograph Bezel

8,Crown Material:316L Stainless Steel

9,Crown:Screw-down Crown

10,Rubber Strap

11,Luminous:Super C3 Luminous

12,Back:Screw-down Waterproof Back Cover

13,Water Resistant:200m

14,Case Diameter:45.5mm

15,Case Thickness:13.3MM

16,Strap Width:20mm

17,Weight:109g