Seiko Cal. 5621 - 677

The 5621-677 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5621 caliber with 22j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-950b6c9bf32d]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1991

Related Models

• Seiko 6622-688
• Seiko 7045-555
• Seiko 3892-537
• Seiko 6273-298
• Seiko 5281-361
• Seiko 5623-503
• Seiko 3869-517
• Seiko 4532-779
• Seiko 4421-304
• Seiko 6642-538
• Seiko 4432-190
• Seiko 6271-131