Bluetooth Version of the Pok Footswitch by X-Tempo.
It will be released in October. I have both the USB and Bluetooth version. The USB version is discontinued. Both work great, though. The Pok will be a perfect match for vArranger, Band In A Box, Ableton Live, and many other apps that use keyboard shortcuts. When I use it with vArranger, I can call up sounds, and control many arranger functions just by tapping a foot switch.
No info on the BLE model yet, but at least you can read about the discontinued USB wireless model here. http://www.xtempozone.com/