Seiko Cal. 0747 - 839

Released in 1977, the Cal. 0747 with design code 839 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-f8405ac8ff25]

Also known as: Helmet, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Champagne

Jewels

27j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1977

Related Models

• Seiko 0714-364
• Seiko 6198-325
• Seiko 5254-421
• Seiko 0775-688
• Seiko 3812-667
• Seiko 5699-219
• Seiko 7180-432
• Seiko 5641-547
• Seiko 5617-661
• Seiko 7159-828
• Seiko 0710-288
• Seiko 5670-281