Anker Soundcore K20i wireless ear waterproof to 36 hours of app technical standards White (Bluetooth 5.3) [Completely earphones/inner earphones/IPX5

【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. Long playback time of up to 36 hours: When the earphones are fully charged, you can play music for up to 6 hours, and when used with the charging case, you can play music for up to 36 hours. It also supports short-time charging, which allows approximately 2 hours of playback with just 10 minutes of charging. Comfortable in-ear design: Light weight of approximately 3.3g per ear and inner-ear design without ear tips. You won't get tired even if you use it for a long time, and you can use it comfortably even in long-term use situations such as online meetings and classes. Powerful bass even with in-ear headphones: 13mm drivers and Anker's proprietary BassUp technology deliver deep bass. Clear voice calls: Equipped with AI noise reduction function. Eliminates surrounding noise and delivers clear audio to the other party. Package contents: Main unit, charging case, USB-C & USB-A cable, safety manual & quick start guide, technical compliance mark certified product (frequency band: 2.40-2.48GHz) A fit that fits perfectly in your ears: The smallest size Soundcore earphones with noise canceling function have ever been made. Due to its small and lightweight design, it fits perfectly in your ear and provides an excellent fit.