Good pageturner. I use it with the OnSong app on an Apple iPad. Very customizable. Fixed rechargeable batteries (charge through USB connector) that last for days of use.
The only disadvantage is that it takes over the bluetooth keyboard function. So when you want to make notes or changes, you have to switch off the pageturner to get you iPad keyboard back
Having a 9V adapter to attach it to a pedalboard power supply would be nice.