August Active Noise Cancelling Headphones, Wired Earphones In Ear Corded Earbuds with Built-in Microphone Powered by AAA Battery, Noise Reduction, Aluminum Alloy Construction, Gold-plated Jack ACTIVE NOISE CANCELLING: Reduce background sounds by up to 20dB with our advanced noise cancelling technology to enjoy uncompromising powerful audio and to give you the music you love for work, travel, and relaxation. AAA BATTERY POWERED: No need to charge your earphone, power up in minutes with anther AAA Battery, no need to worry about the power run out. IN-EAR COMFORT: With interchangeable ear-buds for convenience and comfort, the headphones will stay in place when youre on the move. METAL CONSTRUCTION: Crafted with machined aluminum alloy that reduces battery consumption; also features a gold-plated 3.5mm audio jack and an airplane audio adapter for convenience when flying. FULL CONTROL: in-line remote control for full audio playback includes volume adjustment, track selection, and play/pause functionality with a 45-inch-long wire.