Size Guide Imperial Diameter, in Ø 1.65 Thickness, in 0.31 About Designed For UnisexPremium ultra-thin watch records every precious moment! Suitable stylish casual life. Key Features ✅ Premium SEIKO Quartz MovementProvides accurate timing for your daily life occasions.✅ Premium Stainless Steel Case & BandsHigh density 304 stainless steel case and bands, electroplated process to get great glossiness and various colors. No allergy. Adjust/Care Instructions ✅ SONY 377 SR626SW (1.55V) battery supported, easy to replace, or fix.✅ Wipe the dust off gently with a clean, dry microfiber cloth.