CITIZEN Mechanical Sapphire Collection NP4020-51A
Caliber: 4150, Automatic 21 Jewels Made in Japan
Metal: Stainless Steel Case
Screw see-through caseback
Size: 45mm with crown
Water Resistance: 100m
Band:  Stainless Steel bracelet
Glass:  Sapphire Crystal
Dial:  Silver
One year International warranty