What's in the box:

Multifunctional Electronics Audio Music Tesla Coil Module Plasma Speaker Sound Solid Science Experimental Toy with BT (Standard)

It is a perfect teaching tool to spark students' interest of science, also can be a fine gift.

Features:
Desktop-level integrated mini solid state Tesla coil finished product, made of PCB, highly integrated, cleaning and safe.
Square-wave music can be played to increase its playability.
It is a perfect teaching tool to spark students' interest of science, also can be a fine gift.
You only need to twists an electric-pin and plug-in the powersource to experience the charm of palms-lightning.
Direct current power adapter, no other accessories, no grounding needed.
With heat dissipation system, it is safer.

Specifications:
Supplys voltage: 110V-240V 50/60Hz
Powers: 0-100W
Lightning length: 0-10cm (adjustable by a knob)
Input voltage: direct current 48V 2A
Material: PCB
BT: yes
Item size: 106 * 106 * 61mm / 4.2 * 4.2 * 2.4in
Package size: 210 * 140 * 110mm / 8.3 * 5.5 * 4.3in
Package weight: 900g / 2.0lb

Packing List:
1 * Tesla Coil
1 * Power Adapter