KZ 藍芽線語音問題

yy1234

我用開的KZ 藍芽線   開機關機的語音提示都是廣東話.但今日再用突然轉左做普通話.  


請問有人知道如何轉換嗎?  thx

藍芽線相片

https://www.google.com.hk/imgres?imgurl=http%3A%2F%2Fg.search2.alicdn.com%2Fimg%2Fbao%2Fuploaded%2Fi4%2Fi3%2F275642758%2FTB2ONtBbMoQMeJjy0FnXXb8gFXa_!!275642758.jpg&imgrefurl=https%3A%2F%2Fworld.taobao.com%2Fproduct%2Fkz%25E8%2597%258D%25E7%2589%2599%25E7%25B7%259A.htm&docid=QLusmXzAA7-SXM&tbnid=Lq6Nl1AcYfuT3M%3A&vet=10ahUKEwifl7_JtO_eAhVDvrwKHRnWBQgQMwg7KAAwAA..i&w=800&h=800&bih=550&biw=1130&q=kz%20%E8%97%8D%E7%89%99%E7%B7%9A%E6%94%B9%E8%AA%9E%E9%9F%B3&ved=0ahUKEwifl7_JtO_eAhVDvrwKHRnWBQgQMwg7KAAwAA&iact=mrc&uact=8