Casio has introduced three new skeleton blue watches in Japan, continuing its partnership with environmental group ICERC Japan.
The release marks the organization's 35th anniversary in 2026.
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The watches feature a translucent blue gradient finish inspired by seawater. Casio has integrated biomass plastics into the bezels and bands, using renewable organic resources.
All models come in packaging made from recycled materials.
G-Shock GA-B2100KB-2A
Based on the octagonal 2100 series, this model includes Bluetooth connectivity for syncing with the Casio Watches app.
It offers automatic time adjustments, world time settings, and a phone finder tool.
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The watch runs on Tough Solar charging, providing about seven months of battery life under standard use. A small whale-shaped indicator hand sits on the 9 o'clock subdial.
It is priced at ¥29,150 ($182).
G-Shock Frogman GW-8202K-2
The Frogman is a purpose-built diving watch with a titanium screw-back case and ISO-certified 200-meter water resistance.
It includes a dive mode that tracks dive times up to 24 hours and surface intervals, storing up to 10 dive logs.
It also displays moon phase and tide graph data. The watch lacks Bluetooth but uses standard quartz accuracy and Tough Solar power.
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Activating the LED backlight reveals a whale silhouette on the LCD. It is priced at ¥85,800 ($536).
Baby-G BGD-5650K-2
The smallest and most affordable model is the Baby-G at ¥24,200 ($151).
Based on the square 5600-series design, it includes Multi Band 6 radio-controlled timekeeping, which automatically adjusts the time by receiving standard radio waves from six global transmitters.
Like the other models, it is solar-powered. When the backlight is turned on, a swimming dolphin silhouette appears on the screen.
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All three ICERC Japan collaboration models are available in Japan starting June 2026.
