Casio G-Shock GA-B2100C-9AER - Bluetooth Solar Yellow Strap Watch

The watch can run for several months on a full charge, even in the dark.

The watch is compatible with smartphones that support Bluetooth and the Casio G-Shock app.

Alarms are set via the Casio G-Shock app. Follow the instructions in the app to configure alarms.

The watch is water-resistant up to 200 meters.

Yes, the strap is replaceable. Replacement straps can be purchased from Casio or authorized retailers.

Refer to the user manual or the Casio G-Shock app for reset instructions.

The warranty period is typically two years from the date of purchase.

Ensure the watch is exposed to light. Check the light level indicator in the app.

Ensure Bluetooth is enabled on both the watch and your smartphone. Restart both devices and try pairing again. Check for app updates.

Sync the watch with your smartphone via Bluetooth to ensure accurate time. Check the time zone settings in the app.

Refer to the user manual for button functions and reset the watch if needed.