Anker Soundcore C40i wireless waterproof to 21 hours of Metallic gray (Bluetooth 5.4) [Open-ear earphones/ear cuff/IPX4 standard/up

------------------------------------------------------------------------------------------------------------------ 【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. ------------------------------------------------------------------------------------------------------------------ Ear cuff type for a comfortable fit that doesn't block your ears: A new type of earphone that clips into your ear and can be used like an accessory. You can easily enjoy music anywhere while reducing stuffiness and listening fatigue. A stable fit thanks to the flexible bridge that is easy to wear: If you use the included ear cuff caps, you can get even more stability, so you can feel safe even when you move your body or sweat. Large driver for clear sound: A large 12mm x 17mm driver provides powerful deep bass. Delivers clear sound. Intuitive button control: Adopts button control. This prevents malfunctions even if your hand hits it while exercising or moving. Package contents: Soundcore C40i, charging case, ear cuff cap (2 types), USB-C & USB-A cable  /