PS: free give a extra rubber strap

Product Model:SD1983

Brand:STEELDIVE

Movement:Japan NH35 Automatic Movement

Movement Feature:24 Jewels, 41 Hours Power Reserve, 21600/h (3Hz) Frequency, Bidirectional Self Wind

Case Material:316L Stainless Steel

Case Craft:Matting

Back Material:316L Stainless Steel

Back:Screw-down Back

Case Diameter:49mm (Excluding Crown)

Lug To Lug:52mmm (Include Lug)

Case thickness:17.6mm (Including Mirror To Back Cover)

Strap Width:22mm

Case Weight:151g(Excluding Strap)

Watch Weight:175g(Rubber Strap)/255g(Steel Strap)

Strap Material:Rubber Strap/Stainless Steel Strap

Mirror Material:Synthetic Sapphire Mirror

Mirror Coating:Anti-Reflective Blue Coating

Mirror Size:30.50*3.00mm (Diameter*Thickness)

Crown Style:Screw-down Crown

Crown Diameter:6.5mm

Bezel Size:38.00*30.70*1.20mm(Outer Diameter*Inner Diameter*Thickness)

Bezel:120 Clicks Unidirectional Roation Ceramic Bezel

Luminous:BGW-9 Luminous

Waterproof:1000m

Hands Length:8.75*14.30*14.30mm（Hour Hand*Minute Hand*Second Hand）