Additional Details ------------------------------ Bullet point: High-quality stereo sound for calls and music – Two types of noise-canceling technology ensure superior call quality whether in a busy office, a hybrid workspace, a classroom, an airport, or from home. The Active Noise Cancelation (ANC) minimizes surrounding background noise, so you hear your calls or music more clearly, the Environmental Noise Cancelation (ENC) uses two microphones and an advanced algorithm to minimize noise, so you are clearly heard by colleagues and friends.  Product description: The HS-1500BT is a high-quality stereo Bluetooth headset perfect for home or office use. Enjoy superior sound with Active Noise Cancelation (ANC) that reduces low frequency sounds like air conditioners and other background noise so you hear clearly. Environmental Noise Cancelation (ENC) ensures you are clearly heard by others. Lightweight design with padded headband is comfortable for hours of use while on-ear earcups reduce equilibrium issues some users experience with ANC in over-ear models.