You get what you expect, a solid presenter. He feels high-quality and works without any problems. There are only basic functions offered, so start previous or next slide, black screen, presentation and laser pointer. A timer, etc. in vain. If you know in giving presentations and has no problems with the temporal component in lectures, can be accessed safely. Beginners should probably take models with a timer in the eye, which helps in estimating the time. However, the cost significantly more.
As Presenter advanced this product is therefore recommended "favorable".