Seiko Cal. 3840 - 138

Seiko 3840-138

The Seiko 3840-138 represents an important milestone in Seiko's 1976 lineup. Powered by the 3840 caliber with 30j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-e2f1eb490abc]

Also known as: Turtle, Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
9.9mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Silver
Jewels
30j
Frequency
36,000 bph
Power Reserve
55 hours
Year
1976

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