У вашего броузера проблема в совместимости с HTML5
See this excellent new multimeter and oscilloscope made by Mustool, A great tool for my workshop. See links Below:-
Upgraded MUSTOOL MDS8207 Intelligent Digital Storage Scopemeter 2 in 1Digital Multimer -- http://bit.ly/30GewRF
Banggood 13th Anniversary Tools Sale -- http://bit.ly/2KZttZx