When I inserted the batteries, I did not immediately understand how to turn on. Mahal and there and here: no sense. Although the indicator lights up. Then I only tried to give my finger on the designation of the switch. At first I could not think it was a switch. This is not a button, neither a touch panel, but just an engraved pattern on a hard case. Turns out -- switch. You just have to hold it for a few seconds, everything works!