Not requiring one’s hands to use, handsfree(adjective)
A hands-free phone(noun)
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Use "hands-free" in a sentence
"The hybrid version is expected to get an average 47 mpg in the city and its MyFord Touch feature lets drivers play music, control interior climate and make calls hands-free."
"Other features include reality view, lane assist, and Bluetooth connectivity for hands-free calling."
"The MKS will feature a sleeker design, self-tuning suspension system and hands-free controls and entertainment system."