What is Radio-Controlled Watch Calibration?

Radio-controlled watches (also known as atomic watches or radio-controlled clocks) are timepieces that automatically synchronize their time using specific radio signals. These signals are typically transmitted by national time standard institutions and contain precise time information.

How to Use This Tool

1. Select Timezone - Choose the appropriate timezone based on your location or the timezone set on your watch
2. Select Signal Type - Choose the signal type supported by your watch (such as BPC, JJY, DCF77, etc.)
3. Adjust Volume - Ensure the sound is clear but not too loud to avoid distortion
4. Test Sound - Click the "Test Sound" button to confirm your device can play the signal properly
5. Start Calibration - Put your watch in reception mode, then click the "Start Calibration" button
6. Maintain Stability - During calibration, keep your watch close to the speaker or headphones and maintain stability