Seiko Cal. 6657 - 998

Seiko 6657-998

The 6657-998 is a sought-after Quartz piece from Seiko's golden era. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-0c11f729f3ea]

Also known as: Sportsmatic, Crown

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
10.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Cream
Jewels
33j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1981

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