Questions: How long does it spin for?
Answers: High Quality Bearing Keep it spinning for 100~300 Seconds.
Questions: Do they break easily?
Answers: No, they hold up pretty well.
Questions: Is it durable?
Answers: Yes, sure.
Questions: Can I use it at school. Is it quiet when spinning?
Answers: Yes, is very quiet.
Questions: What is the size and weight?
Answers: 7 x 7 x 1 cm. It is 60g.