Seiko Cal. 6687 - 397

Seiko 6687-397

The Seiko 6687-397 represents an important milestone in Seiko's 1997 lineup. Powered by the 6687 caliber with 34j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-d5df64d7eb6d]

Also known as: Turtle, Arnie

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
14.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Silver
Jewels
34j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1997

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