Seiko Prospex Collection Japanese Quarts Sports Watch With A Black Leather Strap, Black Coloured Dial & Date Window. This timepiece is from the Alpinist collection, first launched in 1959 exclusively for the Japanese market.Hugely popular with many fans worldwide, these new designs are now available globally with an upgraded specification from their original inspiration - a longer power reserve of 70h, and a glass upgrade to Sapphire glass. Seiko Prospex watches are designed for sports lovers and adventure seekers in the water, in the sky or on land. This watch is from the Land category and features a bracelet and a stunning dial similar to the original piece. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards."< Some special features include: The movement type is automatic with manual winding, accuracy of +25 to -15 seconds per day with a duration of approx. 70 hours, water resistance of 20 bar, stop second hand function anti-reflective coating on inner surface, lumibrite on hands and indexes & a calfskin leather strap. The Seiko brand has always maintained a high manufacturing standard for its watches & is one of the few fully integrated watch manufactures. They design and develop their own movements using leading-edge technology. On April 14th, 2021, Seiko Prospex was awarded the iF DESIGN AWARD 2021 under the Product Discipline, Watches / Jewelry Category by a jury of 98 design experts from across the world. Thickness: 12.9mm Diameter: 38mm Length: 46mm Weight: 85.0 g Screw case back Screw-down crown See-through case back