Batteries: The charging case contains built-in lithium-ion rechargeable batteries Use: If you charge the charging case in advance, you can use it to charge the earbuds when you go out without a power supply Charging Time: The required time for fully charging the charging case is about 2 hours when the battery is fully empty Compatibility: This charging case is ideal for charging WF-1000XM5 earbuds Color: This charging case is available in black color
