Multi-size Support: Labels width ranges from 1.57" to 4.3", such as 4x6, 3x3, 3x2 thermal labels and so on. The clear and professional print quality, combined with high-speed and high-volume capabilities, significantly enhances work efficiency. Multi-Platform Support - Includes Windows/Mac desktop software + mobile apps (iOS/Android) with batch printing feature. Ideal for: Amazon FBA & Walmart WFS sellers eBay/Shopify/Etsy store owners USPS/UPS/FedEx small business shippers
Product information
| Brand | Rongta |
| Connectivity Technology | Bluetooth, USB |
| Printing Technology | Thermal |
| Special Feature | Portable,inkless, wireless |
| Color | Black |
| Model Name | Thermal Shipping Label Printer |
| Printer Output | Monochrome |
| Maximum Print Speed (Color) | 1.0 |
| Max Printspeed Monochrome | 120.0 |
| Product Dimensions | 8.66"D x 3.54"W x 4.13"H |
| Controller Type | Android, iOS |
| Maximum Media Size | 4.1 x 9.5 inch |
| Included Components | Labels |
| Print media | Labels |
| Max Input Sheet Capacity | 100 |
| Max Copy Speed (Black & White) | 120 ppm |
| Sheet Size | 4 X 6 Inches |
| Maximum Black and White Print Resolution | 300 dots_per_inch |
| Warranty Type | Limited |
| Dual-sided printing | No |
| Max copy resolution black-white | 300DPI |
| Duplex | Simplex |
| Hardware Interface | USB |
| Ink Color | Black |
| Additional Printer functions | Print Only |
| Control Method | App |
| Total USB Ports | 1 |
| Model Series | Thermal Shipping Label Printer |
| Specific Uses For Product | Enterprise, Home, Office |
| UPC | 798156389994 |
| Printer Ink Type | No Ink |
| Supported Media Sizes | 4 x 6 inches |
| Item Weight | 2.99 pounds |
| Item model number | RP421A-BU-BK |
| Date First Available | August 17, 2025 |
| Manufacturer | Rongta |
Additional Features
- Attention: Phone and Tablet Start Print: Download the App 'RT-Elabel', Turn on thelabel printer and your phone's or tablet's Bluetooth.; Laptop/PC Starts Printing: Download and install the driver from the Website or QR codes.Than Use the USB data cable to connect the desktop label printer to your computer.


