Meet Wekey Pocket 2: one of the thinnest Bluetooth keyboards on the market that can be paired to multiple devices, allowing you to become more productive on your smartphone, tablet, and laptop. It is 3mm thick when open and weighs only 95g. It has an integrated force recognition touchpad for mouse and click control.
The keyboard has a waterproof design. It runs on a month on battery. Expected to ship in February for as low as $39.[Source]