Brother RuggedJet RJ4040-K Direct Thermal Printer - Monochrome - Portable - Label Print - USB - Serial - Wireless LAN - Battery Included - 4.09" (103.89 mm) Print Width - 5 in/s (127 mm/s) Mono - 203 dpi - 4" (101.60 mm) Label Width

Brother RuggedJet RJ-3230BL Mobile Direct Thermal Printer - Monochrome - Portable - Label/Receipt Print - Ethernet - USB - Bluetooth - Black - 3" (76.20 mm) Print Width - 5 in/s (127 mm/s) Mono - 203 dpi - 2.83" (71.88 mm) Width - For PC, Android, iOS

Brother RuggedJet RJ-3250WB-L Mobile Direct Thermal Printer - Monochrome - Portable - Label/Receipt Print - Ethernet - USB - Bluetooth - Wireless LAN - Black - 3" (76.20 mm) Print Width - 5 in/s (127 mm/s) Mono - 203 dpi - 2.83" (71.88 mm) Width - For PC, Android, iOS