Seiko Cal. 3887 - 977

The Seiko 3887-977 represents an important milestone in Seiko's 1970 lineup. It features a Silver dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-7758bb3ead06]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1970

Related Models

• Seiko 7053-401
• Seiko 4573-643
• Seiko 5280-999
• Seiko 5699-754
• Seiko 6379-650
• Seiko 6693-269
• Seiko 7153-598
• Seiko 5643-491
• Seiko 0791-284
• Seiko 3875-683
• Seiko 7071-710
• Seiko 6129-914