Wasart Hi-Fi stereo sound quality: Bluetooth headphones feature two 14.2 mm low distortion made of composite materials. BassUp technology improves bass by up to 43% and transmits rich sounds with crisp treble and neat bass. The wireless headphones use ambient noise cancellation (ENC) and 4 HD mic, the ambient noise is reduced by more than 38 dB, ensuring that your voice is heard clearly at the other end. Bluetooth 5.3: Wasart wireless earphones use a Bluetooth V5.3 chipset. This provides a faster and more stable signal transmission and a low latency without interruption. Wireless in-ear headphones ensure a solid connection within the reception range up to 15 m. Whether you are at home, in the office or travelling, you won't have to worry about an interrupted connection; Wasart