Seiko 4″ DPU-S445 Hand-Held Mobile (portable) Printer


• Seiko – DPU-S445 – Seiko DPU-S Series Hand-Held Mobile Thermal  Printer

• Capable of meeting the mobile environment’s demand for durability and reliability.


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Seiko Hand Held Thermal Printer Series – Stylish and easy to operate.

The DPU-S Series are hand-held portable printers from Seiko incorporating a low voltage thermal printer mechanism that ensures fast and high quality printing. This latest member of our DPU family, the DPU-S445 features all demands of the escalating mobile printing market. IrDA interfacing combined with the availability of Windows drivers as well as a software library (Windows CE 5.0, Windows Mobile 5.0 / 6.0) meet the requirements of mobile computing equipment. Applications do range from field sales, inspection and measuring services, mobile medical condition monitoring through to inventory and warehousing equipment.

Capable of meeting the mobile environment’s demand for durability and reliability, this compact performer features a Lithium-ion-battery with an optional external charger. You can be assured of excellent resolution in characters and graphics, and a high print speed of up to 90 mm/s. Couple these outstanding features with Bluetooth, RS-232C, USB, serial, or IR wireless versatility and a print width of 104 mm, and you’ve got the answer to your portable and mobile print needs at a price that’s as easy to live with as the DPU-S445 is easy to carry. You can also put this compact unit in many instrument cases or holders, making “hands-free” use a reality.



  • Bluetooth, USB and Serial interface
  • Max. print speed: DPU-S445 : 90 mm/s
  • Compact and lightweight
  • Easy paper operation
  • Supports label and cut sheet paper
  • Android SDK
  • Software library (Windows CE 5.0, Windows Mobile 5.0 / 6.0)
  • Label print
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DPU S445 applications DPU S245 applications

SII Portable Print Service for Android and iOS

The Print Service recognizes Bluetooth and WLAN coupled Seiko Instruments printers, and allows printing directly from various apps (for example the browser).

The following printers are supported:

  • MP-B20 – 2″ Portable Printer
  • MP-B30 – 3″ Portable Printer
  • MP-B30L – 3″ Portable Printer
  • MP-A40 – 4″ Rugged Portable Printer
  • DPU-S445 – 4″ Portable Printer
  • DPU-S245 – 2″ Portable Printer
  • RP-F10 – POS Receipt Printer
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Model DPU-S245 DPU-S445
Printing Method Thermal line dot printing
Number of dots/line 384 832
Resolution (dots/mm) 8
Paper width (mm) 58 112
Printing width (mm) 48 104
Speed (mm/sec) max 100 90
Outside diameter of paper roll (mm) max ф 38 ф 50
Character matrix (H×W dots) 24 × 12, 24 × 24, 16 × 8, 16 × 16
Character dimensions (H×W mm) 3.0 × 1.5, 3.0 × 3.0, 2.0 × 1.0, 2.0 × 2.0
Number of columns 24, 12, 32, 16 52, 26, 69, 34
Type of Paper Roll paper, Label roll paper Roll paper, Label roll paper, Cut sheet paper
Character type Extended graphics character set, Katakana character set,
CP1252, Optional font, Downloaded character,
User-defined character, JIS 1 & 2 level kanji
Bar code UPC-A/E, JAN (EAN) 8/13, ITF, CODE39, CODABAR,
CODE128, PDF417, QR Code, MaxiCode, Data Matrix
Power supply (V) Li-lon battery, Specified AC adapter
Communication interface Bluetooth*1, USB, Serial
Input buffer 4K bytes
Command ESC/P™ conformity
Cutting Tear bar
Operating temperature (˚C) -10 to 50 0 to 50
Service life (km) 50*2
Dimensions (W×D×H mm) 83 × 130 × 45*3 145.0 × 135.0 × 58.0*3
Mass (g) Approx. 280*4 Approx. 490*4
Standard FCC, CE, VCCI, CCC*5
Option AC adapter, Battery pack, Battery charger, AC cable,
USB cable, Serial cable, Carrying case
Software*6 Printer driver, Windows CE (SDK), Android™ (SDK) , iOS(SDK)
*1 Only Bluetooth model. *2 Use recommended thermal papers. *3 Excluding protrusion. *4 Including battery, excluding roll paper.
*5 DPU-Sx45-00B-E model only. *6 Please see “Associated software tool” for details.

USB interface specification

Bluetooth interface specification

USB printerclass 2.1 conformity Based on Bluetooth Ver. 2.0 + EDR

Serial interface specification

Item Specification
Baud rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
Data bit 7bits, 8bits
Parity bit Odd, Even, or None
Stop bit 1bit, 2bits
Control method H/W BUSY, Xon/Xoff

Printer Drivers / SDK

Please see for the latest drivers.




BVM Customisation Service

If you cant find an off the shelf product that meets your specific requirements speak with our in house design team who can customize an existing product or design a new product from start to finish.


If you’re unable to find an off-the-shelf product that meets your specific requirements, don’t hesitate to contact our in-house design team. They possess the expertise to customise an existing product to your exact specifications or embark on a fresh design journey to create a customized solution tailored to your requirements.

Our design professionals are dedicated to delivering exceptional results, ensuring that the final product not only meets but exceeds your expectations. When you collaborate with our team, you open the door to a world of possibilities, where innovation and creativity converge to bring your vision to life.

Whether it’s modifying an existing product or crafting an entirely new one, our design experts are committed to providing you with a comprehensive, end-to-end solution that perfectly suits your needs. Your satisfaction is our top priority, and we’re here to turn your ideas into reality.


Design | Develop | Test | Manufacture

With over three decades of experience in designing custom industrial and embedded computer and display solutions across a wide array of industries, we’re here to turn your ideas into reality


Here’s a selection of our design, manufacturing & associated services: –

Design to Order Banner

Design to Order: OEM/ODM Embedded Product Design Services

For customers designing a brand-new product from scratch or working with an existing prototype.

Build to Order Banner

Build to Order: Embedded Computer Design and Customisation Services​

Take an existing system and we can:

Build to Order: Racks and Towers, Peli Case PCs and Mini-ITX PCs

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Embedded Software Services : Configuration, Integration and Deployment

Porting, Integration & Deployment






Materials Management


Logistics and Tracking


External Manufacturing

• Burn in Test
• Temp / Thermal Testing
• Environmental Testing
• Safety Testing
• Software Compatibility Test
• Vendor Selection and Component Procurement
• Product Traceability
• Obsolescence, End of Life and Last Time Procurement Management
• Simple to use on-line RMA System
• Traceability of Shipments
• Product Labelling
• OEM/Branded Packaging
• System Branding
• Custom Labels
• Surface Mount: – High Speed Placement
• Conventional Through Hole Insertion & Assembly
• Automated Optical Inspection
• Bespoke PCB Test