Seiko Cal. 6635 - 378

Seiko 6635-378

The Seiko 6635-378 represents an important milestone in Seiko's 1994 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-a2dd52c8a147]

Also known as: Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Silver
Jewels
31j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1994

Related Models

seikata-wm-a2dd52c8a147