Designed and engineered in Silicon Valley USA, These active noise cancelling bluetooth headphones represent outstanding value for money with brand name equivalent performance. The ANC7S headphones keep out unwanted noise from your listening experience with these active noise cancelling headphones. They’re compatible with Bluetooth 4.0 with a transmission distance of up to 10 meters. The headphones feature a 20Hz to 20KHz frequency range, delivering a powerful, full-bodied sound. Designed for convenience and travel these headphones are super light and feature a pillow-like softness of the earmuffs so you can be in comfort while on for the go or for long listening periods. They run on a 400mAh battery and provide up to 18 hours of playing and talk time with up to 120 hours of standby time. Box Contains - Bluetooth Headphones - Micro-USB Charging Cable - Stereo Headphone Cable - Soft Drawstring Bag for Headphones - User Manual Features Active Noise Cancelling technology Bluetooth 4.0 compatibility Volume, track selection, and power button located on earmuffs Up to 18 hours of talking and playback time Up to 120 hours of standby time Super large soft earmuffs Beautiful steel headband design Light weight but very robust Separate ANC on/off control Soft drawstring carry bag ANC on: Around 12 hours of continuous Bluetooth ANC off: Around 18 hours of continuous Bluetooth