AC 2B12 BFR Ladies Collection Comes With Quartz Multifunction Movement, Including 31 Days Calendar, 24-Hours Display, And Day Indicator. These Cool Watches Are Manufactured In A Special TR90 Thermoplastic Material With A Stainless-Steel Back Case And Silicone Strap. These Materials Have Been Chosen To Make 2B12 BFR Light Enough For Those Of You Who Like To Do Outdoor Activities.