If you have large wrists or aren't willing to adjust to a smaller dial and case then you can always go with the larger Seiko SNZ Sports. This SNK809 looks superb on a 6 1/4" wrist, but I'd consider at least trying on the SNZ for wrists > 6 3/4". Ideal for NH35 or NH36 MOD. - SKX - SKX007, SKX009, SKX013. Pressure test your watch after each modification if you have intentions to use it underwater. There's nothing related to authentic nor genuine Seiko product, but it's fit perfectly.