Good device: its pleasant despite a slight lack of power, use "classic" easy, discreet and compact, short, everything would be fine if the "wifi" function was easier to implement. As a bonus, the document is needy on that! I have managed to connect my chain or a Mack nor gold to a PC, the possibility of connection was a key point which determined my choice of purchase: I'm very disappointed on that! If anyone has a solution, it will be welcome!