Seiko Cal. 6638 - 925

Seiko 6638-925

The 6638-925 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6638 caliber with 32j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-774ce9760495]

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
37mm
Case Thickness
15.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
White
Jewels
32j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1985

Related Models

seikata-wm-774ce9760495