Hi-Res Certified Sound: Life Tune active noise cancelling headphones have 40mm drivers with highly-flexible silk diaphragms that reproduce deep, resonant bass and crisp treble up to 40kHz—ensuring music has enhanced clarity and precise details. Multi-Mode Noise Cancelling: Life Tune’s hybrid active noise cancellation uses external and internal microphones to detect and cancel out up to 95% of engine noise. Transport, Indoor, and Outdoor modes tailor noise cancellation to block specific noises more effectively. Voice Enhancement For Calls: By pairing 2 microphones with a noise reduction algorithm, Life Tune active noise cancelling headphones eliminate distracting ambient noises so you sound crystal-clear when making calls. 40-Hour Playtime: Listen for up to 40 hours on a single charge when using noise cancelling and extend it to 60 hours in standard mode. For a boost of power, charge for 5 minutes and get 4 hours of playtime. Long-Lasting Comfort: Weighing 9oz (260g), Life Tune is 10% lighter than standard active noise cancelling headphones. The earcups and headband feature memory-foam padding covered in soft protein leather to provide all-day comfort for your ears and head. Note: NFC fast pairing is only compatible with Android phones. Ensure your phone’s NFC is turned on and you know where your phone’s NFC sensor is located. Tap this part of your phone on the logo on Life Tune’s right earcup (where its NFC sensor is located) to pair.