Compatibility: This charging case is specifically designed for the Galaxy Buds FE SM R400. It includes a 3.3ft Type C charging cable, making it an excellent replacement for lost or damaged cases. It serves as a perfect spare to meet your daily charging needs. Please note, it is not compatible with Galaxy Buds 2 SM R177, Galaxy Buds Pro SM R190, and does not support wireless charging. Built-in Battery: Equipped with a robust 600mAh battery, this charging case can recharge your earbuds up to four times on a full charge. Whether you're at home, in the office, in your car, or traveling, you can conveniently charge your earbuds anytime. Safety Prevention: The charging case features a built-in chip that safeguards your device against short circuits, overvoltage, overcurrent, and overcharging, ensuring a safe and reliable charging experience. LED Indicators: Stay informed with the intuitive LED indicator lights. A red light means the earbuds and charging case are charging, while a green light indicates they are fully charged. Since the battery percentage of the charging case is not displayed on your phone, you can easily check the status via the external LEDs: flashing red for 0-30% charging, yellow for 30-80%, and green for 80% to full. Premium Material: Crafted from high-quality PC material and adorned with soft ABS, this charging case offers a smooth and pleasant touch. It is the ideal choice for replacing a lost or damaged charging case, providing both durability and a premium user experience.