We used this on my daughter's science fair project board, replacing a homemade cobbled together version from a sound card picked up at Hallmark. That did not last! This one was perfect. It's very sturdy--about 1/4-inch thick, and the working parts are all very protected inside. The sound quality is not bad at all, which was important as her project was focused on sound. It held up well and still plays 6 months later. - Jenn G.