Seiko Cal. 6381 - 947

Seiko 6381-947

The Seiko 6381-947 represents an important milestone in Seiko's 1973 lineup. Powered by the 6381 caliber with 25j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-3b5ecc4a8cd3]

Also known as: Tuna, Helmet

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
11.5mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Silver
Jewels
25j
Frequency
36,000 bph
Power Reserve
68 hours
Year
1973

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