Soundcore Liberty 4 NC True-Wireless Noise Cancelling Earbuds Color:Light Blue meaning that it requires no

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Soundcore Liberty 4 NC True-Wireless Noise Cancelling Earbuds Color:Light Blue meaning that it requires noHighlights Reduce Noise By Up to 98. 5%: Liberty 4 NC noise cancelling earbuds have a high sensitivity in ear sound sensor, an oversized driver, and an innovative noise isolation chamber that cancels up to 98. 5% of noise for peaceful travel Noise Cancelling Adapts to Ears and Environments: Adaptive ANC 2. 0 makes real time calculations and adjusts to your ear canals and external environment for maximum quiet amongst the hustle and bustle Crisp Sound