Seiko Cal. 7121 - 107

Seiko 7121-107

The Seiko 7121-107 represents an important milestone in Seiko's 1978 lineup. Powered by the 7121 caliber with 28j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-370662bf189a]

Also known as: Turtle, Monster

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
13.5mm
Lug Width
19mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Silver
Jewels
28j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1978

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seikata-wm-370662bf189a