Introducing the Stylish Smart Watch with NFC Feature! Case size:47.6 x 47mmCase material:Stainless steel coated in gunmetal PVDAnimation ring:Multi-layered comprising carbon fibre and coloured resinCase back:Stainless steel embedded with NFC chip for authentication purposesMovement type:AutomaticMovement no.:Miyota 82S5Power reserve:Approx 40hrsInterface:Four layers construction with colourful cut-out honeycomb and skeletonised plateGlass:Sapphire crystalWater resistance:10ATMStrap type:StrapStrap material:Silicone strapBuckle:Stainless steel coated in gunmetal PVD tang buckle.