Seiko Cal. 4540 - 254

The 4540-254 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4540 caliber with 20j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-e9b18e3bcb2f]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1996

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