https://www.primoit.co.uk/product/Accessories/Remotes-and-Presenters/Wacom/ACK-411050-Wacom-ExpressKey-Remote-Accessory---Remote-control?prodid=2300212
ACK-411050 - Wacom ExpressKey Remote Accessory - Remote control - for Cintiq 13HD,
Wacom ExpressKey Remote Accessory - Remote control - for Cintiq 13HD, 16, 21UX, 22HD, 27QHD, Companion 2; Cintiq Companion Hybrid; Cintiq Pro 13, 16, DTH-1
ackwacomremoteaccessorycontrol