Marinemaster 300 2000 Anniversary Edition. For 20 years now I've loved the Marinemaster 300 personally. They just offer up so much of everything: quality, value, chunk factor, Japanese-ness. Just serviced and ready to go. Diameter: 44 mm w/out crown, 46 mm w/crown, 49 mm lug to lug. Lug Width: 20 mm at the lugs tapering to 18 mm (will take a 20 mm strap). Strap/Bracelet: Seiko rubber strap with steel tang buckle as supplied by Seiko at the most recent service. Case: Steel with Zaratsu polish, screw down new style Seiko crown as supplied at the most recent service, replacement style ...