Seiko Cal. 3812 - 225

The Seiko 3812-225 represents an important milestone in Seiko's 1981 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-d66e86601066]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1981

Related Models

• Seiko 6652-167
• Seiko 6246-249
• Seiko 4453-458
• Seiko 6658-707
• Seiko 0781-344
• Seiko 4456-306
• Seiko 3823-965
• Seiko 6686-338
• Seiko 6377-276
• Seiko 4587-116
• Seiko 0731-282
• Seiko 4568-606