The Haylou GT7 has a high-quality composite vibrating diaphragm coil and an AAC audio codec that restores more audio detail and gives you an excellent audio experience. Dual-master communication ensures a stable connection every second. Double-tap the left handset to turn on extremely low latency mode and enjoy audio and video synchronization. The new Bluetooth 5.2 chip integrates the benefits of efficient transmission, extremely low power consumption and less background noise.