Motorola's Z ultra-slim slider phone will sport a 2.2in, 262,000-color 240 x 320 display, incorporate up to 128MB of memory, be capable of operating as an e-book reader and be able to play 128-voice polyphonic ringtones, the company's South Korean subsidiary, which designed the phone and launched it earlier this week, said today.

As we noted yesterday, at 14.8mm thick, the Z isn't the thinnest phone around, but it's pretty slim for a slider phone. It's 104mm long and 51mm wide, and weighs 110g. It has a 1.3-megapixel camera on the back and a 720mAh battery inside - capable, Motorola claimed, of delivering 130 minutes' talk time and running for 160 hours on stand-by.

There's even the scary sounding "D-day function", which is more likely a feature inserted by our translation software than a button which launches the invasion and liberation of France.

In addition to the e-book reader software, the Z has an English-Korean dictionary on board and the obligatory MP3 player. ®