Seiko Cal. 7138 - 357

The 7138-357 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-d678dda091f2]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1998

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