Wireless Bluetooth speaker & wireless earbuds uses the most advanced Bluetooth 5. 1 technology. It has the advantages of fast transmission, stable transmission and no entanglement. 2x faster transmission speed, It can effectively pair any Bluetooth-enabled device with Bluetooth speakers. Speaker with built-in microphone for hands-free calls. Speaker and wireless earbuds use 2 different Bluetooth module, so you can use them separately at the same time.