Wireless MIDI controller

The nanoKEY Studio provides a keyboard, knobs, trigger pads, and touch pad that lets you instantly convert your inspiration into sound. It is battery operated and can connect wirelessly to iPhone/iPad or Mac/Windows. It’s a compact, mobile MIDI keyboard that is easy to travel with, allowing ease of use anytime, anywhere.

https://www.korg.com/us/products/computergear/nanokey_studio/