Seiko Cal. 6256 - 320

The Seiko 6256-320 represents an important milestone in Seiko's 1990 lineup. Powered by the 6256 caliber with 32j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-01f8e7b2251e]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1990

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