Seiko Cal. 3837 - 520

The Seiko 3837-520 represents an important milestone in Seiko's 1997 lineup. Powered by the 3837 caliber with 33j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-2a6d094b3d0e]

Also known as: Tuna, Panda

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1997

Related Models

• Seiko 4486-761
• Seiko 7010-331
• Seiko 4519-683
• Seiko 4589-486
• Seiko 5638-364
• Seiko 5618-662
• Seiko 5274-851
• Seiko 4499-146
• Seiko 5291-281
• Seiko 4486-383
• Seiko 7129-290
• Seiko 6649-511