Seiko Cal. 5257 - 307

Seiko 5257-307

The 5257-307 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5257 caliber with 25j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-3ee53602ea3d]

Also known as: Silverwave, Sportsmatic

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
13.2mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
90m
Dial Color
White
Jewels
25j
Frequency
28,800 bph
Power Reserve
51 hours
Year
1999

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