The Anker SoundCore Liberty 4 Pro are in-ear TWS earbuds featuring a vacuum design that ensures closed acoustic architecture. Equipped with hybrid drivers measuring 10.5 mm, they reproduce frequencies ranging from 20 to 40,000 Hz. The Hi-Res Audio certification confirms their ability to deliver immersive sound, while support for AAC, APTX, and LDAC codecs ensures high audio quality. For comfortable control, they feature a touch panel and volume adjustment capability. The Anker SoundCore Liberty 4 Pro are IP54 rated, making them resistant to dust and moisture. Weighing only 5 g, with the charging case at 50 g, they connect via Bluetooth 5.4 with NFC support, and the ability to connect to multiple devices simultaneously enhances usability. They support active noise cancellation and transparency mode, allowing sound adaptation to the environment. With a built-in noise-canceling microphone and a sensitivity of 100 dB, they provide high-quality voice transmission. The battery allows for up to 10 hours of playback, and with wireless charging and fast charging, just 5 minutes can yield up to 4 hours of playback. Charging is done via a USB Type-C port. The package includes a charging case, interchangeable ear tips, and a charging cable. The Anker SoundCore Liberty 4 Pro are a reliable choice for users who value versatility and high functionality.