Seiko 5 Sports Automatic Polyester SNZG15J1-var-NATO27 100M Men's Watch It exhibits that sort of a no-nonsense style that makes it look cool and wearable all day long as a beater watch for all sorts of activities. The nylon strap on it will make sure the watch is light on your wrist and it doesn’t impede your movements in any way. It is an upgrade over the SNK series; with a bigger and better overall build quality.