Thank you for viewing! I purchased these a few months ago, but haven't used them much for my purposes, so I'm putting them up for sale. I believe they are almost as good as new. These are "all-in-one" true wireless earbuds packed with high-performance noise cancellation, high-resolution audio quality, and a wealth of convenient features. ☑︎ Contents • EarFun Air Pro 4 Body (Left and Right) • Charging Case • Complete set of ear tips • USB Type-C Charging Cable • Instruction Manual • Dedicated protective case (black) *Sold separately, official product ☑︎ Condition of the product • The body and charging case are in very clean condition as they were immediately placed in a protective case after purchase. • Operation is perfectly fine. All accessories are included, so you can use them with confidence. ☑︎ Features of EarFun Air Pro 4 1. Amazing Noise Cancellation With proprietary "QuietSmart 3.0" technology, achieve an overwhelming noise reduction of up to 50dB! You can escape the noise of trains and cafes and immerse yourself in music. It also features adaptive ANC that automatically adjusts to the surrounding environment. 2. High-resolution audio quality Supports both high-quality codecs **"LDAC" and "aptX Lossless"!** Enjoy clear, balanced sound that is faithful to the original sound. Equipped with the latest Qualcomm chip "QCC3091," even non-high-resolution sound sources sound great. 3. Abundant convenience features • Multi-point support: Connect and automatically switch between two devices, such as a smartphone and PC, making it ideal for business situations! • Wireless charging support: Easily charge by simply placing them down. • Long battery life: Up to 11 hours with ANC off, and up to 52 hours with the case, so you don't have to worry about running out of battery. • High-performance microphone: With 6 microphones and AI technology, call quality is also clear. If you have any questions, please feel free to comment. Thank you for your consideration.