Hello There, have recently also gained me this model. And it exceeded my expectations worlds. The instalation is again always described totally easy and super Logitech devices. Here is not the latest driver, but not really a problem. Have the new and not yet installed. Now for the gamepad. The batteries will be selbstversständlich. There are 2 normal AA batteries. The keys are arranged super. The structure is similar to a ser Playstation controller. Are you know, anyway, the best on the market. Loss of speed due to radio transmission does not exist. At least not noticeably for me. It is also possible to connect several gamepads on a C. Have four, each gambled with such a Cordless Rumblepad, NHL on a laptop. Without Problems. The keys seem to be very durable. Even my friends uses this device. So who is looking for a gamepad, must strike here. And when it comes to more weight: hardly noticeable but easily gewöhnungsbedürfdig. Have Fun With It. However, price-performance ratio could not be better.