Honeywell (formerly Datamax-O'Neil), MicroFlash series - model: MF4TE, Portable Rugged Direct Thermal Mobile Receipt Printer (4.10in print width, 203 dpi, 2.5 ips, 2MB Ram / 4MB Flash, serial (RS-232) communication, wireless 802.11 b/g, includes swivel belt clip (requires swivel belt loop (part number: 210156-001) if warn on belt, paper, cleaning card, user guide and 2X Li-ion battery (7.2 volts, 2200 mAh), requires AC adapter (part number: 220515-100))