Seiko Cal. 3816 - 683

Seiko 3816-683

This Automatic model from 1979 features a 40mm Two-Tone case. Powered by the 3816 caliber with 31j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-c87f496bcd89]

Also known as: Turtle, Baby Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
40mm
Case Thickness
15.1mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Silver
Jewels
31j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1979

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