We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact white thermal label printer with top-loading roll slot and USB cable attached

Rongta RP421A Thermal Label Printer Bluetooth 4x6 in

SKU CH-CBCW-2QMFQ

Thermal label printer prints 4x6 inch shipping labels wirelessly via Bluetooth or USB, supports 1 to 4.4 inch widths, and weighs 1.5 kilograms

  • Interface typeUSB
  • Printing methodNo Ink
  • Cutter typeAuto Document Feeder
  • RFID encodingPrint only, Thermal
  • Ribbon typeNo Ink, Thermal
  • Media formatLabels
  • Wireless Bluetooth printing from iOS and Android devices via the RONGTA app
  • Thermal direct printing needs no ink or toner, lowering running costs
  • USB driver connection supports Windows and macOS for desktop use
  • Prints labels from 1 to 4.4 inches wide including 4x6 shipping formats
  • Compact 8.66 x 3.54 x 4.13 in design weighs 1.5 kg

Rongta RP421A 4x6 thermal label printer

The Rongta RP421A is a compact thermal label printer built for small-business shipping and product labelling. It prints 4x6 inch shipping labels and smaller formats up to 4.4 inches wide without ink or toner. Bluetooth connectivity lets iOS and Android devices send jobs through the RONGTA app, while a USB cable links Windows and Mac computers via downloaded drivers. It suits sellers who need fast, inkless labels for packages, barcodes and QR codes.

Thermals noise and power in normal use

The printer uses direct thermal technology, so there is no ink ribbon to replace and no toner dust. Operation is quiet enough for a desk or countertop, with only the paper feed and cutter mechanism audible during a print run. Power comes from the included mains cord; the unit weighs 1.5 kilograms and measures 8.66 by 3.54 by 4.13 inches, so it sits on a shelf without vibration or heat buildup.

Upgrade from inkjet or handwritten labels

This printer replaces inkjet label sheets, handwritten address slips or outsourced label rolls. The jump is worth it when daily volume makes ink cost and drying time a bottleneck, or when marketplace platforms require 4x6 inch labels printed on demand. It does not serve users who need colour printing, wide-format media beyond 4.4 inches, or network Ethernet connectivity.

How it compares

Measured against everything we stock in Thermal Label & Receipt Printers, at today’s prices. Recalculated every night.

Price $44.99
Cheaper than about 74% of the 858 comparable items (median $84.99).

Specifications

Product
Brand nameRongta
Product lineShipping Label Printer-RP421A
Model nameShipping Label Printer-RP421A
Part numberRP421A
Ports & slots
Interface typeUSB
Size & build
Product dimensions8.66 in × 3.54 in × 4.13 in
Product weight1.5 kg
Compatibility
Accepted media sizes4.1 in × 9.5 in × 4 in
OS compatibilityiOS
Supported platformsCertified for Windows Vista
Mac compatibilityAndroid
In the box
In the box1 Printer, 1 Power Cord, 1 USB Cable, 1 Quick Start Guide, adhesive labels
More details
Printing methodNo Ink
Cutter typeAuto Document Feeder
RFID encodingPrint only, Thermal
Ribbon typeNo Ink, Thermal
Media formatLabels
Media capacity1 Printer, 1 Power Cord, 1 USB Cable, 1 Quick Start Guide, adhesive labels
Print dimensions4 × 6 in

Questions about this item

How do I install the printer on a Windows PC using the USB cable?

Download the driver from rongtaglobal.com/rp421a, connect the USB cable, then run the installer; the setup guide claims it takes about 60 seconds.

What consumable will need replacing and how often?

Only adhesive label rolls are consumed; the thermal print head uses no ink or ribbon, so you simply load a new roll when the current one runs out.

What is the maximum label width the printer can handle before it stops feeding?

The printer accepts label widths from 1 inch up to 4.4 inches; anything wider will not feed correctly.

More in Thermal Label & Receipt Printers

Similar items