Seiko Cal. 4511 - 950

The 4511-950 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4511 caliber with 26j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-c5bd9b72561b]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1997

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