According to one embodiment, An electronic apparatus that is capable to communicate with a wireless apparatus includes: a receiver to receive a first signal including first information in which the wireless apparatus is in a synchronous state, or a second signal including second information in which the wireless apparatus is in an asynchronous state; and a processor configured to switch the electronic apparatus from an asynchronous state to a synchronous state in response to reception of the first signal or reception of one or more of the second signals.