Seiko Cal. 4540 - 738

The 4540-738 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4540 caliber with 35j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-1334006d93df]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1971

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