Strap Strap: Silicon Strap Color: Black Strap Measurements: 8-1/2" L x 22mm W Band Width: 22mm Case Case Shape: Round Case Back: Stainless Steel Exhibition Case Measurements: 44mm Case Thickness: 15mm Movement Movement Type: Automatic Movement: Caliber Seiko NH 35 Movement COA: Japan Features Dial Color: Purple Dial Material: Enamel Crystal Type: Sapphire Crown Type: Screw down Water Resistance: 330 meters Complications: Helium Release Valve,Date Bezel Material: Ceramic