These wireless headphones feature Bluetooth® technology, making your life easier, more comfortable and more efficient. No more tangled cord, and no more busy hands when calling. The CNA-BTHS02x has an invisible microphone for a sleek design, and padded ear-cups for a soft fit. This model offers crystal clear sound with dynamic bass, so you can also enjoy your favorite music. It has a battery life of up to 4 hours, and a range of up to 10m. This model is available in black (CNA-BTHS02B), white (CNA-BTHS02W), pink (CNA-BTHS02P) or blue (CNA-BTHS02BL). Built-in rechargeable battery.