Seiko Cal. 3840 - 121

The 3840-121 is a sought-after Solar piece from Seiko's golden era. Powered by the 3840 caliber with 30j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-39b3187f5fde]

Also known as: Panda, Rally

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1988

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