Casio launches two new Baby-G BGA-10 watches with a clever color-changing dial mechanism

Casio is set to launch two new Baby-G watches in Japan this November under the BGA-10 series. The lineup includes the black BGA-10-1AJF and white BGA-10-7A1JF, both featuring a unique rotating color wheel beneath the dial.

Design Details

Instead of a digital display, Casio is using a physical white-to-black gradient wheel to change how the watch looks. The dial has four heart-shaped cutouts of different sizes. The gradient wheel sits right below these cutouts and is mechanically linked to the watch’s date function.

Every time the date rolls over at midnight, the wheel rotates a bit, changing the shades that show through the holes. If you want a specific color combination, you can also use the crown to turn the wheel manually. Casio does note that you have to be careful when setting this up, as the date and color alignment can get out of sync if adjusted incorrectly.

To actually use the crown, you have to interact with another specific hardware feature: a removable bezel. The resin bezel acts as a bumper to protect the mineral glass and covers the crown during normal wear.

When you need to set the time, change the date, or adjust the color wheel, you have to physically pop the bezel off the case. It is designed to be removed by hand without any special tools.

The rest of the watch design is very straightforward. Both models stick to a monochrome color scheme with a few silver accents. The hour and minute hands are rounded, the seconds hand has an arrow shape, and the Arabic numerals are made of raised silicone to add some depth to the dial.

As for the basic specifications, these are standard Baby-G watches. They are shock-resistant and water-resistant up to 100 meters (10 bar). The case measures 46.6 x 42.1 x 11.4 mm.

Because the case, band, and bezel are all made of resin, the watch is very light, weighing just 34 grams. It runs on a standard SR920SW battery, which Casio says should last for about three years before needing a replacement. The timekeeping accuracy is rated at ±20 seconds per month.

Pricing and Availability

Both the BGA-10-1AJF and BGA-10-7A1JF are currently available for pre-order in Japan. They are scheduled to ship in November 2026 and are priced at ¥10,450 ($66).

In related news, Casio has recently launched the G-Shock DW-5600RBG-1 Union collaboration watch with bold Pan-African colors and introduced two new G-Shock GM-S2110NS watches featuring textured starry dials.

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(Casio 1,2)