Seiko Cal. 6391 - 306

Seiko 6391-306

Released in 1990, the Cal. 6391 with design code 306 was part of Seiko's domestic market collection. Powered by the 6391 caliber with 27j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-8214594c63cb]

Also known as: UFO, Baby Tuna

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
White
Jewels
27j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1990

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