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.



Ready to print anywhere. With best in class portability and ease-of-use design.



  • Bluetooth, USB and Serial interface
  • Max. print speed: DPU-S245 : 100 mm/s
  • Max. print speed: DPU-S445 : 90 mm/s
  • Compact and lightweight
  • Easy paper operation
  • Supports label and cut sheet paper
  • Windows drivers (XP, Vista, 7) (32/64bit)
  • Android SDK
  • Software library (Windows CE 5.0, Windows Mobile 5.0 / 6.0)
  • Label print
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The DPU-S Series are hand-held portable printers 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 XP and Vista 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.

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-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

USB printerclass 2.1 conformity

Bluetooth interface specification

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




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


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Take an existing system and we can:BuildToOrder

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Porting, Integration & DeploymentEmbeddedSoftware

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