Anker Soundcore C40i wireless to 21 hours Clear black (Bluetooth 5.4) [Open-ear earphones/ear cuffs/IPX4 waterproof/up playback/multi-point

【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.

[About clocks that synchronize time via radio waves] The function of clocks that synchronize time via radio waves only works in the Japanese area. Please be careful. Ear cuff style for a comfortable fit that doesn't block your ears: A new type of earphone that clips onto your ear like an accessory. You can enjoy music anywhere while reducing stuffiness and listening fatigue. Flexible bridge for easy wear and a stable fit: The included ear cuff caps provide even more stability, so you can feel at ease even when moving around or sweating. Large drivers for clear sound: The large 12mm x 17mm drivers deliver powerful bass and clear sound. Intuitive button control: Button control prevents accidental operation even if your hand hits it while exercising or moving around. Package contents: Soundcore C40i, charging case, ear cuff caps (2 types), USB-C & USB-A cable  /