Seiko Cal. 5630 - 857

The Seiko 5630-857 represents an important milestone in Seiko's 1971 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-b31bbb30b77e]

Also known as: Turtle, Flighty

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1971

Related Models

• Seiko 6368-978
• Seiko 4491-326
• Seiko 6168-394
• Seiko 4523-455
• Seiko 3886-665
• Seiko 7078-392
• Seiko 6348-706
• Seiko 0755-280
• Seiko 5683-239
• Seiko 5296-141
• Seiko 7158-803
• Seiko 7113-934