Similar in design to the later, consumer-oriented Psion Series 7, the netBook has a clamshell design, a VGA-resolution touch-sensitive colour screen, 32 MB RAM, 190 MHz StrongARM SA-1100 processor and a QWERTY keyboard. The RAM is upgradeable through the addition of an extra 32 MB chip. The netBook is powered by a removable Lithium Ion rechargeable battery, giving a battery life of between eight and ten hours.
The netBook runs the EPOC ER5 operating system (the predecessor of SymbianOS). Unlike the Psion Series 7, the netBook operating system runs from RAM. A Java run time environment, conforming to Java version 1.1.8, is available.
In October 2003 Psion Teklogix announced the NETBOOK PRO, replacing the original netBook. This was similar to the earlier model, but upgraded with a 16-bit colour SVGA (800 × 600 pixel) display, 128 MB of RAM, and a 400 MHz Intel XScale PXA255 processor running Windows CE .NET 4.2 instead of EPOC. It is also possible to run Linux on this model.
 Included software
- Agenda – a personal information management program
- Bombs – a minesweeper game
- Calc – a calculator
- Comms – a terminal emulator
- Contacts – a contacts manager
- Data – a flat-file database program
- Email – an email, SMS and fax client
- Jotter – a multipage scratchpad
- NetStatRF – a WiFi card monitor
- Program – an OPL program editor
- Record – a voice recording program, for use with the in-built microphone
- Sheet – a spreadsheet and graphing package
- Sketch – a drawing program (for use with the touch-screen interface)
- Spell – a spellchecker, thesaurus and anagram program
- Time – a world clock and alarm program
- Opera – a web browser
- Word – a word-processor
 The "Netbook" trademark
Psion registered the trademark NETBOOK in various territories, including European Union USPTO on 21 November 2000. They used this trademark for the netBook product, discontinued in November 2003, and from October 2003, the NETBOOK PRO, later also discontinued.and , which was applied for on 18 December 1996 and registered by
Intel began use of the term netbook in March 2008 as a generic term to describe "small laptops that are designed for wireless communication and access to the Internet", believing they were "not offering a branded line of computers here" and "see no naming conflict".
In response to the growing use of this term, on 23 December 2008 Psion Teklogix sent cease and desist letters to various parties including enthusiast website(s) demanding they no longer use the term "netbook".
Similar marks were rejected by the USPTO citing a "likelihood of confusion" under section 2(d), including 'G NETBOOK' (MSI's 'WIND NETBOOK' ( ) and Coby Electronics' 'COBY NETBOOK' ( rejected 13 January 2009)rejected 31 October 2008),
- Psion netbook news release, PR News Wire.
- Vogel, Sandra (2003-10-03). "Psion NetBook Pro: a first look". ZDNet.co.uk. ZDNet. Retrieved 2009-02-23.
- * Linux on Psion Netbook Pro
- OpenPsion, SourceForge.
- Psion netbook news release
- Psion Discontinued Products
- NETBOOK PRO Discontinued
- Paul Bergevin – VP and GM of Intel’s Global Communication Group
- Psion Cease and Desist Letter
- Psion threatens netbook sites over trademarks