Welcome to our storeNew Wireless Bluetooth Headphones Bass Headset Noise Cancelling Sport Earphone Holiday giftsThis item is 1:1 Refurbished Bose QuietComfort 35 II wireless headset.Second generation headphone can greatly reduce noise.Package List:1 * QC35 II Headset1 * Audio Cable1 * Charging Cable1 * User ManualFeatures:* Internal and external microphones measure unwanted ambient noises, then circuitry in the headphones generates sound at a frequency that cancels out those noises to provide active noise cancelation.* Three levels of world-class noise cancellation for better listening experience in any environment, just using the Action button to adjust the levels.* Comes with high-quality built-in Microphone for hands-free calls, which sets your hands free. Connecting external devices (such as, MP3 / MP4, etc.) without BT function via 3.5mm audio jack.* With easy BT pairing, the rechargeable lithium-ion battery enables up to 20 hours of wireless music play time. You can keep the music going all day long.Specifications:Impedance: 32Frequency response: 20Hz-20kHzSensitivity: 1183DBPlaying Time: about 20 hoursPackage Size: Approx. 35 * 20 * 10cm / 13.78 * 7.87 * 3.94inPackage Weight: 1100g / 2.43lb