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400x and 900x
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We upgraded the popular Volcano SV with an SH brand engine
678001 The Thames and Komsos Plasma Ball jr. zap patrol 400x and 900xLearn about electricity, matter, and energy. Bring physics to life with electrifying experiments. Interactive electricity light show Features: 5 inch glass sphere Beautiful new design Two modes: always on and sound activated USB C power port and cable included (power adapter not included) Also works with 4 AAA batteries (not included) Hangs on a wall or rests on a tabletop Safe to use. Follow all instructions and precautions. Classic scientific device
