The product complies already unpacked in optics and processing did not meet expectations. The manual can be forgotten, also available on the Internet at the manufacturer description. The product is advertised with an internal memory of 16MB. However, it is not possible to transfer from a USB stick to that memory images -> thus meaningless. The mini remote control is hard to use - bad key contact. In a further inquiry at the manufacturer by mail was no answer. The quality of displayed images in line with expectations.