So it is simply excellent for the price.
But there are some black dots that do not make the perfect product (I confirm the observations of Titi):
* First the plug is German. It would have been wise to use a model Schuko (CEE 7/7) that would have allowed a full EU compatibility. So either you have wall sockets without earth (not well :)) or you have the German wall outlets or extension you buy / adapter / power strip that allows you to connect the programmer. The socket of the programmer is also German.
* Then as rightly pointed Titi best I ordered, although blister, had micro-scratches on the screen. Nothing serious but it frankly spoils the felt on the product.
* Finally one of two programmers refused to work, a small reset everything back in order.
So if you overcome one way or one way or another blackheads it's just a great product.