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Compact white thermal label printer with roll holder and USB port

Rongta RP420 Bluetooth+USB 4x6 Thermal Label Printer

SKU CH-AEFA-MSPK0

Thermal label printer prints 4x6 inch shipping labels at 150 mm/s via Bluetooth or USB for iOS, Android, Windows and macOS

  • Interface typeUSB
  • Cutter typePortable, Labels
  • RFID encodingPrint only, Thermal
  • Ribbon typeThermal
  • Media formatLabels
  • Accepted media sizes4 in × 6 in × 4 in
  • Wireless Bluetooth prints from phones and tablets without cables
  • Automatic label detection handles widths from 1.57 to 4.1 inches
  • Thermal direct technology needs no ink toner or ribbon
  • High-speed output at 150 mm/s for quick dispatch
  • Compact 7.4 x 10.24 x 5.3 in design weighs 1.5 kg

Compact 4x6 thermal label printer for mobile

The Rongta RP420 Bluetooth+USB prints 4x6 inch shipping labels and smaller formats up to 4.1 inches wide using direct thermal technology that needs no ink, toner or ribbon. It connects via USB to Windows or macOS computers and pairs over Bluetooth with iOS and Android devices through the companion app. Small businesses, warehouses and mobile workers can produce barcode, address and QR code labels from a device weighing 1.5 kilograms.

Sustained throughput at 150 mm per second

The printer maintains a constant 150 mm/s print speed during long label runs rather than slowing after a short burst. The automatic label identification system detects each label edge and feeds continuously, reducing misfeeds when processing batches of 4x6 shipping labels or mixed smaller sizes. Weekly cleaning of the print head and rubber roller is advised to keep output sharp over extended daily use.

Low heat, quiet operation and modest power draw

Direct thermal printing generates minimal heat because there is no fuser or toner melting stage, so the chassis stays cool to the touch during normal workloads. Mechanical noise is limited to the paper feed and cutter action, making it suitable for quiet office or home environments. Power is supplied through the USB connection, avoiding a separate high-wattage adapter and keeping energy consumption low.

How it compares

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

Price $52.99
Cheaper than about 69% of the 858 comparable items (median $84.99).

Specifications

Product
Brand nameRongta
Product lineRP420
Model nameBluetooth+USB
Part numberRP420
Ports & slots
Interface typeUSB
Size & build
Product dimensions7.4 in × 10.24 in × 5.3 in
Product weight1.5 kg
Compatibility
Accepted media sizes4 in × 6 in × 4 in
Supported platformsCertified for Windows Vista
More details
Cutter typePortable, Labels
RFID encodingPrint only, Thermal
Ribbon typeThermal
Media formatLabels
Print dimensions4 × 6 in

Questions about this item

How much heat or noise does the RP420 produce when running all day?

Thermal printing uses heat instead of ink, so the print head warms during long runs; the supplier suggests cleaning the head and roller weekly to keep it reliable.

What must I already own to start printing with the RP420?

You need a Bluetooth device running iOS, Android, Windows or macOS, plus the free Rongta app and direct-thermal labels between 1.57 in and 4.1 in wide.

Will the RP420 work alongside my older USB-only Windows Vista PC?

Yes — the printer has a USB interface and is certified for Windows Vista, so it can connect directly to that machine while you also pair newer phones over Bluetooth.

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