【Latest Bluetooth 5.3】The latest Bluetooth 5.3 has been fully upgraded, optimized for Bluetooth transmission and connection errors, and achieved a minimum full link delay of 94 milliseconds. Advanced TrueWireless Mirroring technology balances power consumption between headphones and connected devices. Whether you are at home, in the office or on the go, don't worry about a disconnected connection. 【Hi-Fi Stereo Sound】Bluetooth headphones uses a professional 13mm vibrating diaphragm and built in CVC8.0 noise reduction design, which tunes out clear and balanced sound from powerful treble, soft midrange to deep bass, and let you enjoy high fidelity music quality and clear call