Swiss Precision Ronda 785 quartz movement. Elegant square polished case in high grade, solid stainless steel. Available in 4 stunning mother-of-pearl colors, combined with a variety of Italian designed click-on/click-off bands, which allows for fast and easy band changes without tools. Serial numbers are engraved into a curved case back secured by four inset screws. Water resistant to 100ft/30m. Size 35x35 mm, thickness 8mm, weight 1.5oz. 2 year international warranty.