Seiko Cal. 3815 - 210

The Seiko 3815-210 represents an important milestone in Seiko's 1978 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-065aec465cf1]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1978

Related Models

• Seiko 5637-920
• Seiko 4515-199
• Seiko 5282-572
• Seiko 6243-613
• Seiko 6238-386
• Seiko 4498-742
• Seiko 7032-409
• Seiko 4442-220
• Seiko 7093-460
• Seiko 6120-821
• Seiko 6129-327
• Seiko 6673-761