Seiko Cal. 6638 - 216

Seiko 6638-216

Released in 1976, the Cal. 6638 with design code 216 was part of Seiko's domestic market collection. Powered by the 6638 caliber with 25j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-5c7e7568b886]

Also known as: Turtle, Arnie

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
8.7mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
White
Jewels
25j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1976

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seikata-wm-5c7e7568b886