For SRAM For eTap AXS Derailleur Battery Cover Red Plastic 6x2x2cm for 12 Speed

Monitoring Function: Features a built-in monitoring system that continuously checks the status of your derailleur,make sure it operates at peak performance and remains in optimal condition. Enhanced Durability: Incorporates BaSO4 content, which significantly improves durability and resistance to high temperatures,make sure longevity even under demanding conditions.