Put on the headphones and cut yourself off from the irritating noises outside. ANC technology, or active noise cancellation, reflects unwanted sounds, making them inaudible to the human ear. Enjoy distraction-free audio entertainment or relaxing silence. The ANC function can also be turned on without activating the headset. The long-lasting battery of the BTH-700 Bluetooth in-ear headphones allows the device to work for up to 11 hours. An adjustable silicone headband and comfortable earcups ensure a pleasant wearing experience. The headphones fold in two directions - inward and flat - making them easier to store and carry. Intuitive buttons guarantee convenient and efficient control of the device. The built-in microphone allows you to make phone calls, enabling you to answer and end a call directly from the headphone panel without needing to take out your phone.