Brother RJ-3230BL. Print technology: Direct thermal, Maximum resolution: 203 x 203 DPI, Print speed: 127 mm/sec. Connectivity technology: Wireless. Battery technology: Lithium Polymer (LiPo). Product color: Black

Brother TD-4750TNWB. Print technology: Direct thermal / Thermal transfer, Maximum resolution: 300 x 300 DPI, Print speed: 152 mm/sec. Connectivity technology: Wired & Wireless. Product color: Black

Brother RJ-2150. Print technology: Direct thermal, Type: Mobile printer, Maximum resolution: 203 x 203 DPI. Maximum roll diameter: 2.36" (6 cm), Maximum printing width: 2.13" (5.4 cm), Maximum media length: 39.4" (100 cm). Connectivity technology: Wired & Wireless, USB connector: Mini-USB Type-B, Bluetooth version: 2.1+EDR. Flash memory: 32 MB, RAM capacity: 0.032 GB. Product color: Black, Display type: LCD

Brother RJ-4230B. Print technology: Direct thermal, Type: Mobile printer, Maximum resolution: 203 x 203 DPI. Maximum roll diameter: 2.28" (5.8 cm), Supported paper width: 45 - 113 mm, Maximum printing width: 4.09" (10.4 cm). Connectivity technology: Wired & Wireless, USB connector: Mini-USB Type-B, Bluetooth profiles: GATT, HCRP, OPP, SPP. Flash memory: 64 MB, RAM capacity: 0.256 GB. Product color: Black, Display type: LCD

Brother TD-4650TNWB. Print technology: Direct thermal / Thermal transfer, Maximum resolution: 203 x 203 DPI, Print speed: 203.2 mm/sec. Connectivity technology: Wired & Wireless. Product color: Black

Brother TJ-4020TN. Print technology: Direct thermal / Thermal transfer, Maximum resolution: 203 x 203 DPI, Print speed: 254 mm/sec. Connectivity technology: Wired. Product color: Black