Active Noise Cancelling & Hi-Fi Stereo AudioX19 wireless bluetooth earbuds are equipped with newly upgraded active noise cancelling (ANC) technology,which actively blocks surrounding noise,transforming a noisy gym environment into a tranquil personal space.Featuring a 14.2 mm dual-chamber speaker driver unit,these noise cancelling earbuds are precision-engineered to deliver crisp,balanced and immersive surround sound with deep bass.Additionally,the inclusion of two exclusive built-in noise-canceling microphones significantly enhances the performance of conference calls,ensuring that your voice comes through with clarity and volume during phone conversations. 90 Hours Playtime & Transparency ModeEach earbud offers up to 8 hours of continuous listening time on a single charge.When paired with the charging case,OFNEX wireless earbuds deliver a remarkable total of 90 hours of uninterrupted music playback.Moreover, the built-in dual LED power display enhances battery status vis