[product_description]Prospex Marinemaster 1965 Heritage Diver's Watch. Distinguished by its blend of functionality and aesthetics this extraordinary timepiece part of the first globally launched watch series to bear the “Marinemaster” name features the first see-through screwdown caseback on a Seiko diver’s watch as well as an elegantly chamfered case and bezel and a flexible double-curved bracelet for a comfortable fit. Based largely on Seiko’s 1965 diver’s watch the first made in Japan this exceptional timepiece extends the Prospex tradition of celebrating its rich legacy of innovation in high-intensity timekeeping by re-creating and re-interpreting signature achievements with today’s finest technology and materials. Visible beneath the caseback the thin but exceptionally accurate 26-jewel 6L37 movement beats at a frequency of 28800 vibrations per hour and provides a power reserve of approximately 45 hours and manual winding capability. Framed by a uni-directional rotating elapsed timing bezel the distinctively patterned blue dial offers LumiBrite hands and markers. As rugged as it is stylish this premium diver’s watch following ISO standards for scuba diving is crafted of stainless steel with a durable super-hard coating and features a box-shaped sapphire crystal with anti-reflective coating on the inner surface screwdown crown and a tri-fold push button release clasp with secure lock and extender. Packaged in a special collectors’ box. 200m Water Resistant[/product_description][unique_description_1]Caliber 6L37^|28800 vibrations per hour^|26 jewels^|Power reserve: approximately 45 hours^|Technology: Automatic^|Dial Color: Light Blue^|Band: Stainless Steel^|CASE DIAMETER (MM): 39.5^|CASE THICKNESS (MM): 12.3^|CASE LENGHT (MM): 47.2^|CASE MATERIAL: Stainless steel case with super-hard coating^|CRYSTAL: Box-shaped sapphire crystal with anti-reflective coating on the inner surface^|STRAP MATERIAL: Flexible double curved stainless steel bracelet with super-hard coating^|LUG LENGTH (MM): 20^|WATER RESISTANCE: 200 meters (660 feet) follows ISO standards and is suitable for scuba diving[/unique_description_1][unique_description_2]Prospex Marinemaster 1965 Heritage Diver's Watch^|First globally available series to bear the "Marinemaster" name^|Inspired by Seiko's first diver's watch from 1965^|Seiko's slimline mechanical diver's watch^|Automatic with manual winding capability^|Blue/gray uni-directional rotataing elapsed timing bezel^|Light blue patterned dial^|LumiBrite hands and markers^|See-through screwdown caseback^|Tri-fold push button release clasp with secure lock and extender^|Packaged in a special collector's box^|^|^|^|^|^|