Seiko Cal. 3816 - 640

Seiko 3816-640

Released in 1978, the Cal. 3816 with design code 640 was part of Seiko's domestic market collection. Powered by the 3816 caliber with 35j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-6709cd3560a9]

Also known as: Panda, Arnie

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
35mm
Case Thickness
9.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
Champagne
Jewels
35j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1978

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seikata-wm-6709cd3560a9