I'm a complete convert to video on the move with around 20 hours of my favourite videos on my . I've watched on the train and in a camp-site during particularly bad weather. I've even used it on a car journey to keep the kids entertained. There is however a problem - it's not comfortable watching the iPod screen for any length of time. It's not the quality of the screen, which is brilliant. It's having to either hold the screen up to watch (if laying down) or a sore neck having to look down.

Altec Lansing Orbit This is a single battery operated circular speaker for anything that has either a 3.5mm or 2.5mm output jack. It is described as a 360 degree speaker and that the battery life is stated to be 24 hours so is ideal for a small group to listen round. While it is likely the 'group' would be young people, I found that in a normal room environment this speaker gave plenty of volume from an MP3 player.

It is 53x13x10cm with leads inserted. The only thing I have not included is the height of your iPod above the top of the unit, simply because this will vary according to the model you use. The Orbitsound product produces 'airSOUND' from a single speaker giving not only an ordinary stereo effect but also a wide stereo. The nearest thing I have heard previously to this is a product devolped by Yamaha a few years ago but this was huge in comparison and was solely to give a decent output from a TV.

The first unusual thing about this 'box' is that it had no controls on it at all. Everything is done via the remote control. It is 37x26x19cm with leads plugged into the rear. Mine was white with a white grill on the front, at the top right of this- behind the grill - is a six character red LED display that displays what, where and how. The top has the name Geneva on the front edge and in the centre a slot loading CD.

click to enlarge The influence of the iPod phenomena continues to spread.  The latest example of this trend to come my way is the Pure-Fi Anywhere product.  Developed by Logitech, this product is a one-piece, portable speaker set with a centrally positioned docking station for the ubiquitous iPod.

This WiFi Internet radio from Goodmans is 25x11x14cm and shiny black with a matt black front grill that has the 6x4cm four line LCD display sunk into it. The top has two rows of six push buttons with a large touch wheel at either end. All are clearly labelled and unless you are a total novice setting up will be simple. The other connections are on the back outputs for earbuds and a stereo along with the Ethernet input.

The Kensington FX500 "speaker to go" is a slightly bigger than an A5 sheet of paper at around 150x200mm, around 35mm thick and weighing 400g. The unit has a soft finish that should be fairly robust and is reminiscent of a small zip-up folio case. From the front the product has a central clear window through which you'll be able to access front-mounted controls on your favourite MP3 player. A power switch is situated to the lower right.

Clear Acrylic and Brushed-Metal Case The model I was sent works with iPod's with video. The dimensions are 10.5x6.5x1.5cm. The front was blue brushed metal with the rest acrylic apart from the area over the click wheel that is a thinner plastic that enables protection for the wheel while at the same time enabling you to use it. The area over the screen seems to cause no distortion to the image displayed.

This unit is black as are the speakers who as is the style are open displaying the cones. The main unit is 22x31x10.5cm, the speakers are each 15x15x21.5cm. The connecting leads are the bare wire type and are around 1.15metres in length. The case of the main unit is metal and the cases for the speakers are wood and have 10watts total power each speaker.

Like numerous other devices that I have seen recently, those delivering DAB (Digital Audio Broadcast) radio facilities are now adopting a multifunction approach to tempt users into making a purchase.  One example of this trend to broaden the scope of a DAB device is that seen with the Chronos product from PURE Digital.  This piece of kit brings together iPod dock functionality with standard DAB radio facilities in a product entitled PURE Chronos iDock.

Since the change in law the number of products in this space has blossomed. Here we take a look at a very small transmitter from Belkin called 'TuneFM for iPod'. The package it comes in is completely out of proportion to the product itself. Open the package you find a cardboard mock up of an iPod and right down the bottom the FM transmitter which attaches to the iPod dock connector. The body of the transmitter is around 60x25x11mm in size.

Intempo produce a range of iPod speaker systems, along with a varied range of other audio products. The IDS-05 is a mid-sized unit at 23x13x9cm (width x height x depth). Sound is produced by combination of three speakers - two stereo 3W, 2" mid-range speakers to the front and a single, centrally mounted 9W, 3" sub-woofer to the rear. The speakers are not covered with any protective grill.

On a recent train journey virtually half the passengers had headphones inserted with their favourite music blasting into their ears. Despite an ever increasing range of mobile players capable of delivering video - not one of those passengers were making use of that video capability. There are probably a couple of reasons for this.

Entitled , the provides additional audio output capabilities to your MP3 player.  Although it does come with a claim, clearly mentioned on the packaging, that the product has been designed for all MP3 players, it is obvious that the iPod has had a major influence on the design concept but more on this a little later.

Having recently reviewed the I was interested to see how Altec Lansing served the lower end of the market. Where the iM600 is a top of the range stereo speaker system specifically aimed at the iPod - this time we're looking at a small circular speaker with built in amplifier. excellent iM600 To look at the 'Orbit' is fairly simple. Form above it's circular with the Altec Lansing logo embedded in the silver speaker grill.

This is a rather smart gun metal grey box 21x28x16cm. It comes with two speakers 16x22x23cm these are also grey with a different grey mesh grill. The speaker leads are the fashionable bare leads but the claw grab fittings lock onto the leads. Fifteen pages of the manual are a must read as it does a lot of things differently to other units I have used. Some appear - to me anyway - to be illogical.

Firstly the dimensions it is two items the first like a small French bread stick the second the sub woofer. The French stick has two sets of speakers at either end and is 40cm long a maximum of 8cm wide and 6cm tall without and iPod inserted. The sub woofer is more of less round at 19x19cm and around 25cm tall. The woofer is of course down facing a few centimetres above the base.

There are a very large number of portable speaker systems available on the market right now, a sector buoyed up by the popularity of MP3 players in general and the Apple iPod in particular. Many of the available units however are either dedicated to a specific type of player or are limited to a 3.5mm jack/phone auxiliary-in type solution.

In this case I'm reviewing a product the Sharp . The box boasts "Plays and Charges your iPod with ". I think it's the playing that is high-fidelity rather than the charging! We've given it a road test. i-Elegance High Fidelity Sound First of all a summary. From the picture you'll see the box looks a lot like a traditional portable stereo.