Since the late 1990s, G-SHOCK and BABY-G have collaborated with various environmental organizations, supporting their causes through special edition watches. In 2024, they continue their partnership with AQUA PLANET, an NPO dedicated to coral reef preservation. The latest model features the five-lined coral goby, a species inhabiting the CASIO coral field managed by AQUA PLANET, depicted playfully in the design.

The collaboration is based on the BA-110 model, with its intricate dial and coral pink centre representing the coral habitat. Silhouettes of the five-lined coral goby adorn the face, while the matte-textured pale pink bezel and band feature the Aqua Planet logo and the message "OUR OCEAN, OUR FUTURE." The back cover bears the "Love The Sea And The Earth" symbol mark. Utilizing bio-based resin for the bezel and band contributes to sustainability, and the model's packaging is plastic-free, including a 100% cotton drawstring bag doubling as a pouch. This new model invites wearers to immerse themselves in the ocean's beauty, making it an ideal accessory for summertime adventures.

AQUA PLANET is dedicated to safeguarding coral reefs through various initiatives. They are deeply involved in preserving and restoring coral, engaging in activities such as coral transplantation and cultivating Ishigaki coral on Okinawa's main island.

- Module No. 5338
- 46.3 x 43.4 x 15.8mm Case Size
- 45g Weight
- Shock resistant
- LED light: Afterglow
- World time: 29 time zones (48 cities + coordinated universal time), daylight saving on/off
- Stopwatch
- Countdown Timer
- 5 Daily Alarms (with 1 snooze alarm)
- Hourly Time Signal
- Full Auto-Calendar (to year 2099)
- 12/24-hour format
- Button operation tone on/off
- Regular timekeeping
*Analog: 2 hands (hour, minute (hand moves every 20 seconds))
*Digital: Hour, minute, second, pm, month, date, day
- Accuracy: ±30 seconds per month
- Approx. battery life: 2 years on SR726W × 2