this item 2024 Bluetooth 5.3 Technology : The wireless earbuds use the bluetooth 5.3 chipset. There is a faster and more stable signal transmission and has successfully achieved low latency without interruption. With a range of up to 15 m, whether you are at home, in the office, or on the road, you don't have to worry about disconnection of the bluetooth earbuds. Automatic pairing & compatible with multiple devices. More Outstanding ENC Noise Reduction : The wireless headphones adopts dual 14.2mm low-distortion composite dynamic drivers with high resolution decoder built-in and AAC&SBC audio coding technology. In addition, the ENC calling noise cancellation technology brings a clearer