That's probably a typo. The specification has the correct diameter at 4cm. Or if you want the official Seiko site: http://www.seiko.co.uk/collections/men/premier/skp395p1#.Ws5TqJch2Uk This has it at 40.7mm
A good timepiece can bring a lot of joy!
oh you're right. sorry i used the how does it look feature on that website and it said the face diameter was 48mm.
Useful comment, thanks for that.
People that want to tell the time?