About this item hi-res certified music: hear every detail of your favorite songs thanks to life q30’s 40mm drivers. the highly-flexible silk diaphragms reproduce thumping bass and crisp treble that extends up to 40khz for improved clarity. advanced noise cancellation technology: maintain your focus with life q30’s hybrid active noise cancellation. dual noise-detecting microphones pick up and filter out up to 95% of low-frequency ambient sound to ensure nothing distracts you from your music. ultimate noise cancellation experience: customize life q30’s noise cancellation with 3 modes—transport minimizes airplane engine noise, outdoor reduces traffic and wind, and indoor dampens the sound of busy offices with people talking in the background. 40-hour playtime: life q30 active noise cancelling headphones play up to 40 hours of music in noise cancelling mode. standard mode extends the playtime to 60 hours, while a short 5-minute charge gives you 4 hours of listening. pressure-free comfort: life q30 active noise cancelling headphones have ultra-soft protein leather earcups with memory foam padding to fit snugly over your ears. the lightweight build also ensures they’re comfortable for long listening sessions.Connectivity technology: Wireless