Seiko 5 Sports Blue Dial Automatic SNZG11K1-var-LS21 100M Men's Watch One of the topmost manufacturers of qualitative mechanical timepieces, Seiko is respected by buffs and rookies alike. The 5 is one of the most substantial Seiko you’ll ever find among affordable; it meets five criteria: Self-winding automatic movement, Water resistance, day/date (in a single window), a recessed crown and durable components, including the Diaflex mainspring. All are common attributes among the most desired automatic timepieces; this time, however, for a lot lesser.