Seiko Cal. 3843 - 633

The 3843-633 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3843 caliber with 29j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-4079c62b89e2]

Also known as: Tuna, UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1978

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