Seiko Cal. 4540 - 803

The Seiko 4540-803 represents an important milestone in Seiko's 1970 lineup. It features a Black dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-7f5fc905afbe]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1970

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