Seiko Cal. 5657 - 423

The Seiko 5657-423 represents an important milestone in Seiko's 1970 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ad22bffc9405]

Also known as: Panda, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1970

Related Models

• Seiko 4590-801
• Seiko 6652-113
• Seiko 3874-241
• Seiko 4440-747
• Seiko 4532-918
• Seiko 7088-895
• Seiko 6630-587
• Seiko 0790-288
• Seiko 5622-394
• Seiko 6683-286
• Seiko 3878-737
• Seiko 6267-354