Seiko Cal. 4540 - 727

Seiko 4540-727

The 4540-727 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4540 caliber with 31j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-af3d8595f540]

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
9.3mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Black
Jewels
31j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1977

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