Seiko Cal. 3869 - 631

The Seiko 3869-631 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-6a4950f4c8e7]

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1971

Related Models

• Seiko 6290-867
• Seiko 5647-718
• Seiko 6250-130
• Seiko 7069-949
• Seiko 3846-612
• Seiko 7071-686
• Seiko 5279-751
• Seiko 6266-961
• Seiko 4490-528
• Seiko 5622-540
• Seiko 3889-419
• Seiko 6251-649