I've used it for about 5 years, but the hand-winding mechanism has loosened and needs repair. There is no box or instruction manual. Please consider it as a junk item. No returns or refunds will be accepted. [Brand Reliability] SEIKO is known for its high-quality watches, characterized by durability and accuracy. [Design] The simple and elegant design can be used in both business and casual settings. [Functionality] It's a hand-wound watch, making maintenance easy. - Brand: SEIKO - Color: Black - Material: Stainless Steel - Model Number: SBA Thank you for looking.