



Citizen Eco-Drive Radio-Controlled Moon Phase Men's Watch BY1034-59A

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Inspired by the cosmos, the Citizen Eco-Drive BY1034-59A brings astronomical innovation to modern dress watch design. Its 42mm stainless steel case is accented with warm gold-tone details along the bezel and pushers, framing a dual-hemisphere automatic moon phase display.
Powered by the light-driven Caliber H874, it eliminates the need for battery replacements while automatically syncing time via radio signals for atomic accuracy. Protected by a durable sapphire crystal and built with 100 meters of water resistance, it offers a perfect balance of tech-forward convenience and classic sophistication.
Inspired by the cosmos, the Citizen Eco-Drive BY1034-59A brings astronomical innovation to modern dress watch design. Its 42mm stainless steel case is accented with warm gold-tone details along the bezel and pushers, framing a dual-hemisphere automatic moon phase display.
Powered by the light-driven Caliber H874, it eliminates the need for battery replacements while automatically syncing time via radio signals for atomic accuracy. Protected by a durable sapphire crystal and built with 100 meters of water resistance, it offers a perfect balance of tech-forward convenience and classic sophistication.
CASE
Case Diameter: 42.0 mm
Case Thickness: 10.7 mm
Case Length (Lug-to-Lug): 47.6 mm
Material: Stainless Steel (with Gold-Tone Accents)
Crystal: Sapphire Crystal
BAND
Material: Stainless Steel Band
Lug Width: 21.0 mm
Clasp: Three-Fold Clasp with Push-Button
MOVEMENT
Caliber Number / Movement: Caliber H874 (Eco-Drive / Solar Powered)
Power Reserve: Approximately 6 Months (when fully charged)
Water Resistance: 100 Meters / 10 Bar
Luminous: Luminous on hands and indexes
Functions: Hour, Minute, Seconds, Radio-Controlled Timekeeping, Dual-Hemisphere Moon Phase Display, Perpetual Calendar, Date Display
CASE
Case Diameter: 42.0 mm
Case Thickness: 10.7 mm
Case Length (Lug-to-Lug): 47.6 mm
Material: Stainless Steel (with Gold-Tone Accents)
Crystal: Sapphire Crystal
BAND
Material: Stainless Steel Band
Lug Width: 21.0 mm
Clasp: Three-Fold Clasp with Push-Button
MOVEMENT
Caliber Number / Movement: Caliber H874 (Eco-Drive / Solar Powered)
Power Reserve: Approximately 6 Months (when fully charged)
Water Resistance: 100 Meters / 10 Bar
Luminous: Luminous on hands and indexes
Functions: Hour, Minute, Seconds, Radio-Controlled Timekeeping, Dual-Hemisphere Moon Phase Display, Perpetual Calendar, Date Display
Notice to Customers:
Orders are dispatched from Singapore.
For customers in the United States:
As of August 29, 2025, all goods imported into the U.S.—regardless of their value—may incur a 10% import duty. This change follows the removal of the de minimis threshold under updated U.S. customs policies.
Please note that customers are responsible for all import duties, taxes, customs charges, and any applicable handling fees.
For information specific to your country’s customs process, including courier fees or tax-free limits, please reach out to our support team.
Notice to Customers:
Orders are dispatched from Singapore.
For customers in the United States:
As of August 29, 2025, all goods imported into the U.S.—regardless of their value—may incur a 10% import duty. This change follows the removal of the de minimis threshold under updated U.S. customs policies.
Please note that customers are responsible for all import duties, taxes, customs charges, and any applicable handling fees.
For information specific to your country’s customs process, including courier fees or tax-free limits, please reach out to our support team.
