Seiko Cal. 5657 - 603

The Seiko 5657-603 represents an important milestone in Seiko's 1983 lineup. Powered by the 5657 caliber with 17j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-25239ffb5e54]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1983

Related Models

• Seiko 4430-320
• Seiko 6191-259
• Seiko 6678-915
• Seiko 6248-672
• Seiko 5240-641
• Seiko 4424-293
• Seiko 6225-913
• Seiko 5224-548
• Seiko 6158-283
• Seiko 3846-254
• Seiko 6373-817
• Seiko 6623-645