BOSE Wireless Earphones with IPX7 17 Hours of Continuous Equipped with Neckband Type [Equipped Bluetooth5.0+EDR, Hi-Fi Waterproof, Playback, Magnet,

------------------------------------------------------------------------------------------------------------------ 【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. ------------------------------------------------------------------------------------------------------------------ Bose's unique acoustic ports and premium high-efficiency drivers deliver surprisingly powerful sound from a small body. Bose's unique active equalizer automatically adjusts bass and treble to ensure your music, videos, and voices always sound balanced. Plus, the StayHear Max tips fit snugly in your ears, allowing you to hear the bass that brings impact and emotion to your music, while blocking out ambient noise so you can focus on your music and your workout.