Seiko Cal. 6645 - 257

Seiko 6645-257

The 6645-257 is a sought-after Kinetic piece from Seiko's golden era. It features a Cream dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-51dcb4e50b95]

Also known as: Monster, Bellmatic

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
42mm
Case Thickness
12.7mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Cream
Jewels
36j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1991

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