Seiko Cal. 3865 - 248

The 3865-248 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3865 caliber with 18j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-1b44ec9f5b4f]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1987

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