Seiko Cal. 5257 - 987

Seiko 5257-987

The Seiko 5257-987 represents an important milestone in Seiko's 1993 lineup. Powered by the 5257 caliber with 17j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-ff7597b498c9]

Also known as: Sumo

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
45mm
Case Thickness
10.5mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
17j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1993

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