Also called a
mobile phone car kit. A hands-free kit contain both a
speaker and
a microphone to allow cellphone users to use their
cellphone while driving,
without using their hands to operate the device. Some kits may also come with a
cellphone holder or cradle, and power supply cables and connectors. Hands-free kit
cane be hard-wired into the vehicle's electronics or be a portable kit which
uses the 12V power adapter found in most vehicles.
