• Music coil--the electric arc generator adopts design, no grounding needed and no audio wire connection,electric
• Desktop --not only a teaching tool, but a multi-functional for viewing, great your choice,musical coil
• Electric --the electric arc generator can play better than arc loudspeaker,desktop adults office
• Electronic --this desktop is small, light, and easy to carry, can take it with you wherever you go,physics
• Desktop --small size but practical in use, turn the sound slowly to avoid being shocked by the large sound of the arc,musical coil kit