This in-ear phone radio can have up to 16 frequencies stored in the memory during the manufacturing process, for example E1 (Event 1) could be an Sky Sports broadcast, E2 could be BBC Test Match Special, and E3 could be BBC Radio 5Live etc.
Pressing both UP and DOWN buttons simultaneously takes the radio from EVENT mode into normal FM scan radio functionality, where it will scan through the FM range available showing the chosen frequency on the LCD screen. The product has a control wheel that turns the radio on and off and regulates the volume.