This product is brand new and unused. It was opened for photography. Model Number: X19 Bluetooth Standard: V5.4+EDR Single Earbud Weight: Approximately 2.5g Playback Time: Approximately 10 hours Continuous Operation Time: Approximately 50 hours with the case Case Battery: 300mAh Earbud Battery: 30mAh Charging Port: Type-C Waterproof Rating: IPX6 Case Size: Approximately 60*45*25mm ★【ENC+CVC8.0 Noise Canceling Technology】 ENC noise canceling removes various surrounding noises. It eliminates over 90% of noise/environmental sounds such as city noise and wind. Enjoy music while exercising, commuting, web conferencing, gaming, and more! *Individual differences in the perception of noise reduction may occur. ★【HIFI Sound Quality with Low Latency】 The AAC codec, which provides high-quality sound and low latency, is a "voice compression conversion method" that wirelessly transmits audio via Bluetooth. Clear high frequencies and ample low frequencies deliver powerful sound across all genres. ★【Cutting-Edge Bluetooth 5.4+EDR】 By adopting the latest Bluetooth 5.4 communication standard, sound skipping is minimized, achieving wider, faster, lower power consumption, and more stable and seamless connections. The lag between video and audio during video viewing is also significantly reduced compared to older models, enabling a smooth gaming and video viewing experience. *Pairing is required for the first use. ★【Pairing Recognition, Instant Connection】 With innovative pairing technology, after pairing with your smartphone for the first time, you can automatically pair the earbuds by simply taking them out of the charging case when you use them again. You can also easily switch between single-ear and dual-ear use of the left and right headphones. The waterproof performance allows you to use them even if it rains suddenly during sports or if you sweat during sports. It is suitable for all weather conditions. Perfect for jogging, running, yoga, sports, gym, cycling, and more. ★【Long Playback Time, Multi-Function Touch Button Operation】 The wireless earbuds themselves provide 7-10 hours of playback, and when used with the dedicated charging case, which can be charged, they last for 50 hours. The high connection stability is also a key point.