Seiko Cal. 3815 - 739

The Seiko 3815-739 represents an important milestone in Seiko's 1982 lineup. Powered by the 3815 caliber with 24j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-6bbf78a3ac85]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1982

Related Models

• Seiko 5223-357
• Seiko 4532-667
• Seiko 6340-286
• Seiko 6368-247
• Seiko 6684-398
• Seiko 4472-580
• Seiko 5275-783
• Seiko 7167-564
• Seiko 3886-435
• Seiko 6284-995
• Seiko 5615-291
• Seiko 0775-637