Seiko Cal. 6641 - 833

The Seiko 6641-833 represents an important milestone in Seiko's 1986 lineup. Powered by the 6641 caliber with 23j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-a4384bc61fff]

Also known as: Turtle, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1986

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