Seiko Cal. 5657 - 451

This Spring Drive model from 1971 features a 44mm Titanium case. Powered by the 5657 caliber with 36j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-f1fbf62789a8]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1971

Related Models

• Seiko 4572-404
• Seiko 6633-183
• Seiko 6135-105
• Seiko 4544-809
• Seiko 6164-821
• Seiko 6342-680
• Seiko 3898-403
• Seiko 4464-211
• Seiko 4433-392
• Seiko 4548-218
• Seiko 6180-331
• Seiko 5212-874