Give your school staff and volunteers an appreciation gift they can really use - a car charger for their phones and electronic devices. Compatible with most standard cigarette lighter ports, this car charger includes a split ring attachment and can easily disconnects from keys! 12-24 volt input. 5 volts/1 amp output. Measures 2 1/2 in. x 3/4 in. Price includes a one-color imprint on the white swivel portion.