Watch Seiko Presage Classic Series Automatic Open Heart SPB527J1 "Ai-Iro"

Product number: 304942
Seiko Presage Classic Series Automatic Open Heart SPB527J1 "Ai-Iro"
Seiko Presage Classic Series Automatic Open Heart SPB527J1 "Ai-Iro"
Seiko Presage Classic Series Automatic Open Heart SPB527J1 "Ai-Iro"
Men watch - steel band, steel case, sapphire glass. All technical parameters can be found below
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Technical parameters
Product number
304942
Warranty
36 months
5 year warranty for clockwork machinery
Available from
September 2025
Brand
Seiko (Japan)
Gender
Men
Diameter / Thickness
Ø 40,2 mm / 13 mm
Water resistance
100 M
Case
Steel, interhorn width 20 mm
Glass
Sapphire, anti-reflective coating: single sided anti-reflective coating, Other specifications: Convex
Strap
Steel
Clasp type
Butterfly
Luminescence
Is not
Movement
Mechanical with automatic winding. Seiko 6R5J, Power reserve 72h, 21.600 BPH (3Hz), 24 stones
Functions and features
Open heart
Transparent caseback