Noise Cancelling: This wireless earbud adopts CVC6.0+ noise reduction technology to improve sound quality. Item Type: Wireless Earbud with Mic. Built in Battery: This ear hook earbud has built in high performance lithium ion battery with 50mAh capacity, allowing you to enjoy 8 hours of music or calls, 120 hours of standby, and fast charging in just 1.5 hours.
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