Brand: SUN FLAME Thank you for viewing. The dial is approximately 3.5cm. I bought this for my entrance exams. It's a lucky watch that helped me pass, haha. I've only used it a few times, so it's clean, but the battery is dead. Also, there is no guarantee that it will work after a battery replacement. I do not accept returns or refunds. If you understand the above, would you be interested? If you'd like, I can include the box. I have lost the warranty and instruction manual.