Free give a extra rubber strap

Product Model:SD1970C
Brand:STEELDIVE
Movement:Japan NH35 Automatic Movement
Case Material:316L Stainless Steel
Back Material:316L Stainless Steel
Back Cover:Screw-Down Back Cover
Case Diameter:43.8mm (Excluding Crown)
Case thickness:12mm (Including Mirror To Back Cover)
Lug To Lug:47mm
Watch Weight:114g(Including Rubber Strap)
Strap Material:Rubber Strap  / Steel Strap
Mirror Material:Synthetic Sapphire Mirror
Mirror Coating:Anti-Reflective Blue Coating
Mirror Size:32*2.7mm (Diameter*Thickness)
Crown Style:Screw-down Crown
Crown Diameter:7mm
Bezel Size:38*32.1*0.5mm(Outer Diameter*Inner Diameter*Thickness)
Bezel Material:Ceramic Bezel
Bezel:Unidirectional Rotation Bezel
Bezel Luminous:C3 Super Bright Luminous
Dial Luminous:C3 Super Bright Luminous
Hands Luminous:C3 Super Bright Luminous
Water Resistant:200m
Hands Length:8*12*12mm(Hour Hand*Minute Hand*Second Hand)