Seiko Cal. 3815 - 633

Seiko 3815-633

The 3815-633 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-1c6dc16485fe]

Also known as: Panda, Baby Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
42mm
Case Thickness
11.6mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Silver
Jewels
28j
Frequency
28,800 bph
Power Reserve
55 hours
Year
1978

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