Seiko Cal. 0730 - 316

The 0730-316 is a sought-after Automatic piece from Seiko's golden era. Powered by the 0730 caliber with 19j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-b8cf4607e779]

Also known as: Tuna, Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1998

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