The world is one.
The world is one.
UNITE with BLUE Watches


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The world is one.

The sea.
Beautiful. Iridescent. Blue.
Nurturing and connecting us all.
Part of human life since time immemorial.
Part of human life for aeons to come.
Looking at the sea elevates our consciousness.
Precious moments of insight and understanding
that together add up to a kinder future.
Beautiful. Iridescent. Blue.
Like the sea.



Amazing iridescent blue dials that evoke the sea's beauty

Changing constantly with the light, the blue evokes the ever-changing beauty of the sea. FujiFilm structural colour inks are used for the dials. The unprecedented vibrancy and iridescence of the blue is the result of light bouncing off microstructures within the ink itself, rather than of conventional pigments.
The models are as eco-friendly as their appearance suggests. The dials are made from recycled materials, while the watches themselves are powered by Eco-Drive, CITIZEN's proprietary technology that tells the time using clean energy generated from light.

Eco-Drive Diver 200m
Limited edition of 7,000 pieces worldwide

A microcosm of the magnificent sea,
its expression forever changing,
shining brilliantly when it catches the light.
Incorporating biomass, the polyurethane band
is strong and caring, embodying
a deep respect for nature.

Launch:Jun, 2023 (scheduled)
Case/Band:Stainless steel / Polyurethane (including biomass-based materials)
Glass:Crystal glass
Case diameter / thickness:44.0mm/11.5mm(design specification only)
Specifications :
Cal.E168 / Accuracy of ±15 seconds per month / Eco-Drive running for 6 months on full charge / 200m water resistance / Recycled materials used for selected dial components
citizen L
citizen L
citizen L
citizen L
citizen L
EW5591-60L/EW5591-51L(US only)
Limited edition of 1,700 pieces worldwide

Two diamonds and precision-cut accents
evoke bubbles swathed in a shaft of light
rising gracefully from the seafloor.
This sustainable watch embodies our dream
of a sea that will be beautiful forever.

Model:EW5591-60L/EW5591-51L(US only)
Launch:Jun, 2023 (scheduled)
Case/Band:Stainless steel
Glass:Curved sapphire crystal
Case diameter / thickness:21.5mm/7.5mm(design specification only)
Cal.B035 / Accuracy of ±15 seconds per month / Eco-Drive running for 7 months on full charge / W.R. 5 BAR / Dial:2 diamonds / Recycled materials used for selected dial components