For 20 Euro really good and lets simpelst with the iPad to connect. The keyboard has a on / off button and a connect. The build quality is good quality even if the keystroke produces a bright clatter. But even that is not distracting. Important a solid ground and space for the laying on of palms is to tap to comfortably longer texts.
Loading the keyboard via an included, extremely cheap processed USB cable. This part has disappeared to safety in the trash because I prefer a better USB cable (eg, from a digital camera) used to charge the keyboard. Charging time about 4 hours.
The keyboard has its own function keys for sound, slide show, brightness and standby. They also must not be reconnected every time with the iPad. For me, the iPad detect the keyboard every time from the beginning without Bluetooth settings in the Settings.
All in all I can really say that I'm satisfied with this product. After all its competitors with prices beyond the 50 euros are really expensive and no longer seem able to.