Seiko Cal. 6620 - 746

The Seiko 6620-746 represents an important milestone in Seiko's 1977 lineup. It features a Navy dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-0cb22e85821d]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1977

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