Seiko Cal. 6311 - 820

Seiko 6311-820

The 6311-820 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6311 caliber with 17j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-815d228cc5f8]

Also known as: UFO, Sea Horse

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
9.2mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
170m
Dial Color
White
Jewels
17j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1988

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