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Thank you for your question about Comiso Wireless EarbudsAnswer: You can try to reset the earbuds. When the earbuds are off, press and hold the MFB button on the left and right earbuds for 7 seconds at the same time. After the red indicator light flashes 3 times, put the earbuds into a charging case with sufficient power, and turn off the charging case for 10 seconds. Open the lip of the charging case again, wait about 10 seconds, and then the earbuds will reset.If you need any further assistance, please contact us via Amazon message service or support email support@comiso.com.cn, we will handle for you within 24H.Sincerely,Comiso