The CITIZEN Corso collection offers a classic, contemporary style for the simple watch wearer. A functional simplicity with a touch of elegance. Featured in stainless steel with a contrasting black dial with diamond accents. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number J730. Included: 1 Watch(es) Features: Diamond Accent, Quick Ship Battery Type: Lithium Cells Jewelry Closure: Fold Over Clasp Power Source: Ecodrive Watch Movement: Quartz Water Resistance: 30m Band Color: Silver Tone Dial Color: Black Metal Color: Silver Tone Case Thickness: 7.9mm Case Width: 29.2mm Watch Band Length: 7 Inch Band Content: Stainless Steel Case Materials: 100% Stainless Steel Band Width: 13mm Care: Wipe Clean Country of Origin: Imported Quick Ship items ship directly from the manufacturer within 3 to 5 business days.