RS-232, Bluetooth, E-Charge Includes built-in intelligent battery charging, 4MB of flash memory, 2MB RAM, RS-232 port, integrated Bluetooth radio, two batteries, hand strap, paper, and User Guide. The PrintPAD MC70/75 also features an external DC charge port, LED's, and an enhanced battery compartment for easy battery removal, as well as charge contacts for the 220262-102 Charging Vehicle Mount Bracket Kit