激活语音助手需要使用什么功能? 通过JBL Headphones应用启动语音助手功能,将其分配给首选的耳机(左/右)。 Have a follow-up question? Answers from the official manual.Common questionsHow do I pair the JBL Tune Flex to a new Bluetooth device?How do I factory reset the JBL Tune Flex earbuds?How long does the battery last on the JBL Tune Flex?How long does it take to fully charge the JBL Tune Flex?