This is an authentic product. The Seiko SBTR027 is a Seiko Selection men's quartz chronograph watch. Condition: Brand new, unused. Band size: Approximately 18.5 cm Key features: ■Chronograph function: Equipped with a stopwatch function (1/5 second measurement, 60-minute counter). ■Quartz movement: Mechanical quartz movement with 8T63 caliber, accurate to ±15 seconds per month. ■Date display: Includes a calendar (date) function. ■Water resistance: 10 ATM. Design elements: ★★★ Suitable for both business and casual occasions: The standard, sporty design makes it suitable for a wide range of occasions, from business to casual. ★★★Shipping information: To ensure the highest quality, the watch will be carefully packaged and shipped in a box. We generally ship via DHL. ※Please note that customs duties may apply once the product arrives in your local area. Thank you for your understanding. *Your country's customs or delivery company may contact you by phone or email regarding customs clearance. Please make sure you are available to answer the phone. We sincerely hope that your item arrives safely and that you are satisfied. We appreciate your understanding and cooperation to ensure a smooth transaction.