A good guideline is to have no more than 3 such points. Express each technical point as a declarative statement, substantiated with supporting material. Though the restriction to 3 points may seem like a hardship, it will help focus the audience's attention on the most significant information. The best way to present material under a time constraint is to use well-conceived visual aids. A good guideline here is to plan a slide for each key point.
Visual aids simplify the presentation task significantly.
They both focus the audience's attention and cue you as the speaker. In general, each slide should have no more than five major supporting concepts. If yours have more, simply select the most pertinent. If you have three slides, your basic presentation will last about four minutes. This leaves a little time to title, identify, and summarize your material.