About this item CMF by Nothing In-Ear Wireless Headphones — Bandwidth of up 2900Hz provides 42dB Active Noise Cancelling with Transparency Mode, block out the unwanted noise. The external 4*HD Mics detects ambient noise and Clear Voice Technology for crisp, clear call performance. It’s your preferred sleep earbuds Clear Highs, Powerfully Pure Bass — CMF Buds bluetooth headphones oversized 12.4mm Bio-fiber drivers and Ultra Bass Technology 2.0, delivering boosted bass for everyone. We jointly tuned five popular EQ settings with Dirac to ensure an optimal sonic experience adapted to various music styles Long Playtime, Fast Charging — Get 8 hours of battery life on a single charge with a case that extends it to 35.5 hours. If CMF Buds wireless earbuds are low on power, speed charge for just 10mins to get 6.5H of playtime Bluetooth 5.3 and Fast Pairing — As a bluetooth earbuds, CMF bluetooth headphones earbuds support dual device connection, and Google fast pair and Microsoft swift pair with bluetooth 5.3 More Performance — CMF Buds wireless headphones have customise equaliser and controls, IP54 (protects the running headphones from dust and sweat), low-latency mode, game mode, and touch controls, ”find my earbuds” et more in the Nothing X application