Seiko Cal. 6616 - 537

The 6616-537 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-04a54bc8cdb0]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1968

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