Block Out the World Immerse Yourself in the Music Life Q20 active noise canceling headphones pull out all the stops to ensure the music you love listening to always sound its best. Hi-Res Audio with extended treble enhanced clarity and fine detailing are further optimized by our exclusive BassUp technology. And to stop ambient sounds from disrupting your listening experience simply activate hybrid active noise cancellation mode to instantly immerse yourself in the song. Key Features Hi-Res Audio: Oversized 40 mm dynamic drivers produce Hi-Res Audio with treble extended to 40 kHz for exceptional clarity and details. Hybrid Active Noise canceling: Four microphones and a digital active noise cancellation algorithm detect and filter out up to 90% of low- and mid-frequency sounds. BassUp Technology: Our exclusive technology conducts real-time analysis of your audio’s bass frequencies to instantly strengthen it by up to 100%. All-Day Comfort: Memory foam earcups gently fit around your ears and the headband’s rotating joints adjust the angle of the earcups to adapt to the shape of your head. 40-Hour Playtime: Life Q20 active noise canceling headphones power multiple long haul flights from a single charge with up to 40 hours of playtime in wireless ANC mode. Increase to 60 hours in standard wireless listening mode. AUX Cable: Use the included AUX cable for unlimited listening in wired mode. Built-In Microphone: Make convenient hands-free calls. Note: According to regulations the maximum volume of headphones should not exceed 100dB. In order to protect your hearing Life Q20’s maximum volume has been set to around 95dB. It is recommended that you do not listen to excessively loud volumes for long periods of time. For optimal noise cancellation make sure the earcups create a tight seal around your ears. Playtime varies according to volume and audio content. This product is compliant with CP65 RoHS and REACH requirements. However certain people may develop skin irritation due to allergies or sensitivities. To reduce the risk of skin irritation: Clean your device regularly; Avoid using lotions or other products under the portions of the device that contact your skin; Do not wear over injured skin; Where applicable tighten the adjustment until snug but not uncomfortably tight; If your skin becomes irritated stop using device. If symptoms are severe or persist consult your physician. Key Specifications Impedance 16Ω Driver (Full Range) 2 × 40 mm Frequency Response 16 Hz - 40 kHz Range 15 m / 49.21 ft Use a 5.0V==1.0A (or higher than 1.0A) charger to charge Life Q20.