Seiko Cal. 6645 - 540

The Seiko 6645-540 represents an important milestone in Seiko's 1970 lineup. It features a Champagne dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-973ac9b49ea9]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Champagne

Jewels

32j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1970

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