Seiko Cal. 3830 - 284

The 3830-284 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3830 caliber with 34j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-4d7a562d7577]

Also known as: Turtle, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1987

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