Seiko Cal. 3816 - 684

Seiko 3816-684

The Seiko 3816-684 represents an important milestone in Seiko's 1985 lineup. Powered by the 3816 caliber with 26j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-526721c8dedc]

Also known as: Tuna, Sea Horse

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
14.9mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Green
Jewels
26j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1985

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seikata-wm-526721c8dedc