ANC Call Center Bluetooth Headphones with Microphone Audiocore, QCC3020, ANC, AVRCP, A2DP, HSP, HFP, SBC AAC Codec, AC864. These headphones are ideal for call centers, during work, for remote learning, and for conversations while driving. The Bluetooth version 5.0 provides a stable connection with other devices at a distance of up to 10 meters. The Audiocore AC864 is equipped with a sensitive, omnidirectional microphone with adjustable positioning. The adjustable headband allows you to customize the headphones to fit your head shape, and the soft padding ensures comfort even during extended wear. The built-in battery with a capacity of 400 mAh allows for up to 32 hours of operation. The charging time is approximately 1.5 hours. Conveniently placed buttons allow you to adjust the volume, answer calls, and mute the microphone, among other functions.