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like everyone else says, buy one from dollar store if you want to save money and you won't have another presentation for awhile maybe until next term or w.e. those dollar store oens usually last for a good maybe 5-6 hrs or less or more aroudn there if you don't constantly use it. but if you want a high quality one that is more focused and stronger then i suggest you spend the extra money to buy a more professional one because the lighting in the room depending on whether you get to have the lights off might make the laser look dull and hard to see.
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Commerce II{Concentration: Accounting}
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