Seiko's Prospex collection is dedicated to creating sporty, precise and reliable watches. The Prospex SPB451J1 automatic watch is made entirely of stainless steel with an anti-scratch coating. Water-resistant to 300 meters, it is the perfect representation of Seiko's expertise in diving watches. Its attractive blue dial features Lumibrite-coated hands and hour-markers, and is covered by a domed sapphire crystal with anti-reflective treatment and surrounded by a blue unidirectional rotating bezel.