There is no difference between earphones and Bluetooth earphones in Class 9 trademarks. According to the query of relevant public information: Bluetooth headsets and earphones both belong to the group 0908 of category 09. There is no difference between Bluetooth headsets and wireless headsets in the trademark. Bluetooth headsets and wireless headsets are inclusive, which means that Bluetooth headsets are wireless headsets. , and wireless headsets are not necessarily Bluetooth headsets.