Seiko Cal. 6645 - 581

Seiko 6645-581

This Solar model from 1975 features a 41mm Hardlex-Coated Steel case. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-6156363ce7e5]

Also known as: Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
14.9mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
70m
Dial Color
Cream
Jewels
28j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1975

Related Models

seikata-wm-6156363ce7e5