Overall very satisfied, fast installation of the software on Windows PC (Win 8.1), good image brightness can be adjusted quite well. Very flexible cable, but sometimes a little too flexible for long distances in pipes should reinforce the cable with an electric wire (1.5 mm²), otherwise you will not necessarily so far. But comes to further distance really well around the corners and quality of the image is also fully ok. Display can be rotated ...
Got the 10 m - 20 m - to receive a copy versions. Returned this variant as a bit too long. Merchant credit initiated quickly. Shipping costs had to be taken from me. But is indeed OK :-)