This unit, with a good value for money, I have been in use for a few weeks. It is reliable, but is not every day in use. Especially the fast start I felt positive. There are no problems with PowerPoint, OpenOffice org, or a simple manual slideshow. The carrying case is a good addition. It would be helpful to specify the operating frequency in the offer. With simultaneous use of wireless microphones in radio frequency It is not possible handoff. Since this problem but have occurred in effects with radio switch-socket, was I already warned on first use. Otherwise, a recommendable device.
Addendum after 2 years of use: The device operates reliably and stably. The effect described above refers to microphones with radio frequency ca 433 MHz. These suppress when the front device, due to their larger transmission power, the signals from also working on this frequency ducks wireless switches or up the presenter. For non-switched micro function weaker Transmitter problems. Most wireless mics are working already at other frequencies.
