Brand: musecrash Color: 01black Ear Placement: In-Ear Headphone Type: In-Ear Noise Control: Sound Isolation Model Name: SX-02 【High Sound Quality】Faithfully reproduces the texture of instruments and the nuances of vocals, from delicate high frequencies to deep bass. Multi-layer diaphragm technology provides both resolution and a sense of realism. Environmental adaptation AI analyzes ambient noise and automatically adjusts the optimal acoustic balance, covering a wide frequency range from the delicate expressions of classical music to the explosive sounds of movies. Achieves sound quality stability equivalent to wired connections even when connected via Bluetooth. 【ENC + AI Calls】Equipped with smart ENC environmental adaptation noise cancellation (※Compliant with international standard ETSI TS 103 181) with wind noise reduction function, making hands-free calls clear even outdoors. 【Instant Automatic Pairing & Excellent Compatibility】Bluetooth 5.4 has low latency, long range, and high interference resistance. Significantly improves battery life and range, minimizing sound skipping, interruptions, delays, and noise, and achieving stable communication. Compatibility with iOS, Android, Windows, and tablets has also been improved. Instant pairing steps: ① Take out the earphones. ② Turn on BLUETOOTH. ③ Automatic pairing. After the first pairing, on the second use, opening the lid will automatically connect to your phone. 【Ultra-Long 70H Standby】These Bluetooth earphones have a large-capacity battery and are designed for energy saving, allowing for 7 hours of music playback on a single full charge. With a small and easy-to-carry charging case weighing only about 57.9g, you don't have to worry about running out of battery even when using the earphones for a long time. The charging case is small enough to fit in the palm of your hand and can be put in your pocket when you go out, so it won't get in the way wherever you take it. 【Package Contents】Package contents: Rechargeable storage case, Bluetooth earphone body, Japanese instruction manual.