Bluetooth headphones adopt the advanced Bluetooth 5.1 technology to ensure a more stable connection, lower latency, and lower power consumption during data transmission. Adjustable and secure-fit silicone earhooks and ergonomic design ensure your earbud stay comfortably firm in place when doing sports and outside activity, do not worry about the earphones will fall off. LED cold light is used to display the power, and the power of headphones and the charging compartment can be seen. Multi-function touch panel on each earphone helps to play, pause, adjust volume, answer, end calls, and activate Siri and google assistant more conveniently.