Seiko Cal. 6637 - 945

Seiko 6637-945

The Seiko 6637-945 represents an important milestone in Seiko's 1993 lineup. Powered by the 6637 caliber with 36j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-4d09e49eaf06]

Also known as: Helmet, Arnie

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
38mm
Case Thickness
13.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
120m
Dial Color
Navy
Jewels
36j
Frequency
36,000 bph
Power Reserve
71 hours
Year
1993

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