PROSPEX 1968 Reinterpretation This timepiece is one of a collection of new interpretations of Seiko's diving heritage for 2020. This specific watch is inspired by the Seiko 1968 Divers 300m watchwhich was the highest of world standards hi beat calibre and was used for the first climb from Japan to Mount Everest. The 2020 version has been modernised from the original version with a smaller case size - from 44mm to 42mm, high visibility dial layout and increased power reserve to 70 hours with calibre 6R35. Seiko Prospex watches are designed for sports lovers and adventure seekers in the water, in the sky or on land. Since launching Japans first divers watch in 1965, Seikos innovative watchmaking has changed global dive watch standards.