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Datamax-O'Neil 78928U1-4 Portable Barcode Printer

Datamax-O'Neil Apex 4 MFi - USB and iOS Bluetooth Interfaces.
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We want to make sure you are completely satisfied with your purchase. Customers must return their product within 30 days of shipment to receive a full credit less a 15% restocking fee. Returns must be presented in new condition with all of the original packaging.
4" direct thermal printer

The Datamax-O-Neil Apex 4 is a light weight and compact 4" printer that prints a crisp, clean receipt, proof of delivery, ticket or invoice of up to 4.38" at an affordable price to keep within today's tight budgets. The Apex 4 is an economical alternative to the heavyweight products that may be "over the top" for your needs without compromising on quality and durability. Tough enough to handle the jolts and hits expected during a long and busy shift, the Apex 4 is also light enough to wear comfortably throughout the work day. With simple to use features and a long lasting high capacity lithium-Ion battery, the Apex 4 has all the features and functions needed to handle the expanding requirements for retail, hospitality, car rental, law enforcement and field service and sales applications.

Technical Information

  • Maximum Mono Print Speed: 3 in/s
  • Maximum Print Resolution: 203 dpi
  • Print Color: Monochrome
  • Maximum Print Width: 4.10"
  • Recommended Use: Receipt Print
  • Features:
    • Magnetic Card Reader
    • Lightweight
    • Drop Resistant
  • Barcode Symbology Supported:
    • Code 39
    • Code 128
    • Code 128-A
    • Code 128-B
    • Code 128-C
    • UCC/EAN 128
    • Interleaved 2 of 5
    • UPC/EAN
    • EAN/JAN
    • Codabar
    • PDF-417

General Information

  • Product Type: Direct Thermal Printer
  • Brand Name: Datamax-O'Neil
  • Manufacturer: Datamax-O'Neil
  • Product Model: Apex 4
  • Product Name: Apex 4 Direct Thermal Reciept Printer
  • Product Condition: Refurbished

Physical Characteristics

  • Height: 2.5"
  • Width: 6.5"
  • Depth: 7.5"
  • Form Factor: Handheld
  • Weight (Approximate): 1.66 lb


  • USB: Yes


  • Platform Supported:
    • Handheld
    • PC
  • Package Contents:
    • Apex 4 Direct Thermal Reciept Printer
    • 1 x Battery
    • 1 x Roll of Media
    • 1 x Shoulder Strap System
    • 1 x AC Adaptor
    • Apex 4 Direct Thermal Reciept Printer
    • 1 x Battery
    • 1 x Roll of Media
    • 1 x Shoulder Strap System
    • 1 x AC Adaptor

Media Types & Handling

  • Maximum Label Width: 4.40"
  • Media Type:
    • Receipt
    • Direct Thermal Paper
  • Media Thickness: 6 mil
  • Label Core Size: 0.40"
  • Maximum Roll Diameter: 2"

Power Description

  • Input Voltage: 30 V DC
  • Power Source:
    • Battery
    • Power Adapter


  • Standard Memory: 2 MB
  • Flash Memory: 4 MB

Network & Communication

  • Bluetooth: Yes


  • Limited Warranty: 1 Year

Battery Information

  • Battery Chemistry: Lithium Ion (Li-Ion)

Full specifications (PDF)

Full specifications (PDF)

Brand Datamax-O'Neil
Model Apex 4
Paper Dimension 4.1
Print Method Thermal
Print Width 4.0 inches
Interface Bluetooth, USB
Core Inner Diameter 0.4 inches
Print Speed 3.0 inches
Form Factor Mobile
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The Datamax-O'Neil 78928U1-4 is also known as ONE-78928U14 or 78928U14 .