Extra complete calendar function; * Original Japan Miyota 2115 Quartz Movement; * 3 small watch dials only for decoration without function; * High abrasion resistant glass; * Watch crown with environmental IPS vacuum bronze electroplating; * Stainless steel watchband & buckle; * Environmental IP Silver vacuum electroplating case; * REAL Stainless steel back case with Hi - tech laser logo; * 30 meters water resistant. (Please don't press Any Key Underwater) * Clasp: Fold - Over - Clasp - With - Safety * Operating temperature: -10 ℃ to +50 ℃ * Walking on error ± 45S / M