Wireless things with K

• Keyboard

  Wireless keyboards are common; this fits.

• Kindle

  An e-reader with Wi-Fi; works wirelessly.

• Kite

  A kite is a flying object connected by string, no wires

• key fob

  Uses RF to unlock cars; totally wireless.

• karaoke microphone

  Many karaoke mics use wireless radio systems.

• Karaoke mic

  Short for karaoke microphone, often wireless.

The words in the list Wireless things with K come from players of the word game City, Country, River.