https://www.breitling.com/user-manua...88/colt_quartz
SPECIAL CHARACTERISTICS - BATTERY END-OF-LIFE INDICATOR (EOL)
The watch movement is fitted with a battery end-of-life detector, signalled by the small seconds hands which begin to jump every 4 seconds. The battery must be replaced within the next few days by an authorized BREITLING agent. Also ask for a water-resistance test to be performed on the watch.
