Seiko Cal. 4511 - 633

Seiko 4511-633

The Seiko 4511-633 represents an important milestone in Seiko's 1984 lineup. Powered by the 4511 caliber with 21j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-43b2356b38aa]

Also known as: Helmet, Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
37mm
Case Thickness
8.9mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
30m
Dial Color
Silver
Jewels
21j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1984

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