Seiko Cal. 5637 - 435

Seiko 5637-435

The Seiko 5637-435 represents an important milestone in Seiko's 1999 lineup. Powered by the 5637 caliber with 30j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-eb9c718598d7]

Also known as: Turtle, Helmet

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
39mm
Case Thickness
9.8mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
130m
Dial Color
Green
Jewels
30j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1999

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