Seiko Cal. 6284 - 770

The Seiko 6284-770 represents an important milestone in Seiko's 1971 lineup. Powered by the 6284 caliber with 17j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-d31df7ba38e4]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

17j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1971

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