Seiko Cal. 5217 - 377

Seiko 5217-377

The Seiko 5217-377 represents an important milestone in Seiko's 1991 lineup. Powered by the 5217 caliber with 31j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-3caf177857aa]

Also known as: Tuna, Helmet

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
160m
Dial Color
Navy
Jewels
31j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1991

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