Seiko 5 Military SNK809K2-var-NATOS15 Automatic Nylon Strap Men's Watch A timepiece that offers a fairly high degree of horological charm along with touches of playfully austere elegance. There is nothing that’s inherently extravagant about this watch at first glance; just that it speaks about the heritage of the Seiko brand in a way that never goes unheard. Its features make this timepiece stand out from the rest in its category.