Fundamentals of Liquid Crystal Devices (Wiley Series in Display Technology)
- Japanese quartz digital movement featuring^Solid polycarbonate case with solid stainless-steel case back with a comfortable and durable solid silicone strap with solid stainless-steel buckle closure and solid silicone keeper/safety , water-resistant to 99 feet (30m), and all of this is accompanied by a limited lifetime warranty^Japanese-quartz movement^Case diameter: 47mm^Water resistant to 99 feet.