假如你就读于一所国际学校，酷爱发明。在你校的科技周活动中你想向同学们介绍你的一项新发明。请根据下面的提示准备一份英语发言稿。
提示：
1. What's it and when was it invented？  2. What's it used for？ 3. What's it like？4. How does it work？ 5.How much is it？
要求：
1.必须包含所有要点，可适当发挥； 2.表达准确，语句连贯；
3.词数100左右。开头已给出，不计入总词数。

May I have your attention, please?____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________