Seiko Cal. 4521 - 778

Released in 1995, the Cal. 4521 with design code 778 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-e56fd1420ef2]

Also known as: Turtle, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1995

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