The Logitech K375s Multi-Device Wireless Keyboard & Stand Combo retails for S$49. But during IT Show 2018, it was discounted to S$38.

Logitech K375s keyboard allows you to connect up to three devices. It supports Windows, Mac, Chrome OS, Android, and iOS.

Logitech K375s Multi-Device Wireless Keyboard - Box Front
Logitech K375s Multi-Device Wireless Keyboard – Box Front