Seiko Cal. 6378 - 478

Seiko 6378-478

This Quartz model from 1977 features a 37mm Hardlex-Coated Steel case. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-9964b7bd1b35]

Also known as: Tuna

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.3mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Silver
Jewels
28j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1977

Related Models

seikata-wm-9964b7bd1b35