QuietControl 30 wireless headphones. You can't control how noisy your environment is. But you can control how much of it you hear. Set your own levels of noise cancellation with QuietControl 30 earphones, and get balanced audio performance at any volume. A lightweight neckband design conforms to your body for all-day wearability, and a Bluetooth connection keeps the wires out of your way. Listen like never before with new breakthrough technology: now you can control how much of the outside world you want to let in. Noisy commute to work? Block out the distractions. Waiting at the terminal? Let some in, and catch your boarding call. Then turn it back up after takeoff. Throughout the day, noise won't get in your way. Unless you let it. A lightweight, contoured neckband conforms to your body. It's designed with soft materials to stay comfortable-perfect for listening all day. Noise is a constant. So we have a precise arrangement of microphones inside and outside the earbuds to continuously measure, compare and react to it. The system then produces an equal and opposite signal to cancel the noise. The StayHear+ QC tips also form a gentle seal for additional passive noise reduction. Leave the wires behind-without sacrificing performance. The volume-optimized EQ delivers consistent, balanced sound at any volume. If you're on a busy street and need to turn it up, the sound stays true to your music. And they're re-engineered with Bluetooth and NFC pairing, so connecting to your devices wirelessly is quick and easy. An inline remote lets you take/end calls, skip/pause tracks and control volume without reaching for your device. So you can focus on the music. Colour: Black . Specs Headphones:6" H x 6.5" W x 0.75" D (1 oz) Case:6.5" H x 6.75" W x 1.4" D USB cable:12" Bluetooth range: 33 ft (10 m) Battery charging time: Less than 3 hours Battery life: Up to 10 hours per full charge