As per description on Amazon:
Incredible Sound Loved by 20 Million+ People
Hi-Res 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.
i bought the Q35 for 99.99 when it was on sale, its a lot better and amazon can't keep it in stock.
for $10 more you get the amazing LDAC
LDAC enables the transmission of audio content, including High Resolution (Hi-Res) Audio, at the maximum bitrate of 990kbps even over a Bluetooth, which Q30 doesn't have and worth way more then the $10 difference you are paying.