Seiko 5 Automatic SNK578 SNK578J1 SNK578J Japan Made Men's Watch Seiko 5 automatic is renowned for delivering consistent reliability, durability and performance; offering more value for its price. It is one of the most impressive watches at a closer look but no way is it luxury, attracting attention only due to its built, finishing and material quality. It offers a lot more than a mechanical watch at this price point should.