Seiko Cal. 5640 - 303

The 5640-303 is a sought-after Quartz piece from Seiko's golden era. It features a Champagne dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-7854f63f79d5]

Also known as: Panda, Bellmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Champagne

Jewels

24j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1973

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