Seiko Cal. 6690 - 643

Seiko 6690-643

The Seiko 6690-643 represents an important milestone in Seiko's 1999 lineup. It features a Black dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-ebadfb72b352]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
8.9mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Black
Jewels
23j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1999

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