Seiko Cal. 7136 - 444

The 7136-444 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7136 caliber with 28j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-574a918215aa]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1978

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