Seiko Cal. 5680 - 231

Seiko 5680-231

This Hand-Winding model from 1994 features a 40mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-e1bac19e108f]

Also known as: UFO, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
9.4mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Green
Jewels
30j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1994

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