Wireless/ˈwaɪərləs/ Definition 1 of 3Pro Tip 1/3Tech Gadgets Wireless often describes devices where mobility is important, like phones or game controllers. My wireless headphones let me move freely. Pro Tip 2/3No Installation Wireless devices usually don't need complex setup or installation, they're ready to use. He just turned on his wireless speaker and it connected. Pro Tip 3/3Rechargeable Batteries Many wireless devices need charging, unlike wired ones that get power from cables. I need to charge my wireless controller tonight.