Seiko Cal. 5650 - 640

The Seiko 5650-640 represents an important milestone in Seiko's 1999 lineup. Powered by the 5650 caliber with 18j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-9e88f72cbd00]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1999

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