Perfect solution for freeing your hands when talking on your cellphone! Portable design you can take from car to car. Holder features: Attach to any air vent, bracket rotates 180 degrees, built in quick release. Speaker features: Volume control, rotates 180 degrees, LED power indicator, built in additional socket for battery charging. Includes a speaker attachment clip and earphone and jack. Box measures 11" wide x 8 1/2" tall x 3 3/4" deep.