Seiko Cal. 6371 - 604

The 6371-604 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6371 caliber with 23j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-d56a5c8f8a73]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1966

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