Put on the headphones and shut out the distracting noises from outside. The ANC technology, or active noise cancellation, reflects unwanted sounds and makes them inaudible to the human ear. Enjoy distraction-free audio entertainment or relaxing silence. The ANC function can also be activated without turning on the headset. The durable battery of the BTH-700 Bluetooth in-ear headphones allows for a runtime of up to 11 hours. An adjustable silicone band and comfortable ear cushions ensure a pleasant wearing experience. The headphones can be folded in two directions – inward and flat – making storage and transport easier. 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 calls directly from the headphone panel without having to take out your phone.