Anker Soundcore K20i Wireless Ear Waterproof To 36 Hours of App Technical Standards Blue (Bluetooth 5.3) [Completely Earphones/inner earphones/IPX5

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.