Seiko Cal. 5621 - 105

This Solar model from 1971 features a 37mm Two-Tone case. Powered by the 5621 caliber with 36j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-958f3091003f]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1971

Related Models

• Seiko 6292-283
• Seiko 6146-613
• Seiko 7036-842
• Seiko 4598-339
• Seiko 4593-345
• Seiko 7030-107
• Seiko 6676-196
• Seiko 4581-782
• Seiko 5643-944
• Seiko 0777-795
• Seiko 7065-407
• Seiko 7121-480