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Next up is the V400 from Logitech which uses two lasers instead of the now unfashionable LEDs found in most optical mice. The technology has been jointly developed by Logitech and Philips and is called Twin-Eye. Logitech claims that this gives better precision on virtually any surface, as long as it’s not clear glass or mirrors. In fact, the V400 didn’t work on clear plastic either, something that the MX1000 managed to do with only one laser. Hardly what you’d call an “all-terrain laser” technology as the packaging suggests.

But to be fair to Logitech, the V400 works well on most surfaces, though it almost seems to be too sensitive at times producing slight erratic movements of the mouse pointer. It’s using the same 2.4GHz frequency as Bluetooth – and Wi-Fi for that matter – but Logitech has gone for a proprietary technology here instead. The range is actually quite impressive – Logitech claims 10 meters – and I could use it on the other side of the office without any problems, aside from the fact that I couldn’t see the cursor on my screen, admittedly not the fault of the mouse.

As it uses a proprietary technology the V400 needs a receiver to work, but the clever part here is how Logitech have designed it. Rather than using a large and cumbersome box such as those common on desktop systems, the V400 has a tiny five centimetre long receiver that’s smaller than most USB memory keys. Due to its tiny size the receiver can be stored in a slot in the mouse itself. As if this wasn’t clever enough, the mouse actually powers off when the receiver is inserted into the slot, so you don’t waste the battery when it’s not in use. When it is in use, a small flap covers the hole and protects it from collecting dust.

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