Bose Ultra Earbuds Charging Case Black QuietComfort®

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. Keep a replacement or secondary case on hand to keep your QuietComfort Ultra Earbuds safe, protected and, of course, fully charged. This USB-C charging case provides up to 6 hours of music playback on one full charge, and up to 24 hours of music playback on three additional full charges. Available in three colors: black, white smoke, and moonstone blue.