Seiko Cal. 3815 - 421

The 3815-421 is a sought-after Solar piece from Seiko's golden era. Powered by the 3815 caliber with 28j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-6fc97e3996ef]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1993

Related Models

• Seiko 0714-369
• Seiko 6323-398
• Seiko 5628-809
• Seiko 6111-122
• Seiko 6399-275
• Seiko 5650-335
• Seiko 3898-653
• Seiko 7081-851
• Seiko 4457-601
• Seiko 7153-162
• Seiko 0723-651
• Seiko 4562-536