Sony will launch two new models in its Clié PDA range in Japan in two weeks and plans to follow that with launches of the devices in overseas markets.

The PEG-TH55, which is the more expensive of the two new models, is the first to feature a new organizer software application developed by Sony called Clié Organizer, the company said. It replicates the basic organizer functions that are a staple of PDA software, such as scheduler and address book, but frees the user from being restricted to entering information in text only and allows handwritten comments, icons and images to be attached and added to organizer pages.

As for hardware, the PDA is based on Sony's own Handheld Engine processor running at a 123MHz clock speed and the PalmOS 5.2.1 operating system, according to a Sony statement. It has 32M bytes of RAM and a colour LCD that supports 320-x-480 pixel resolution and 65,536 colours. Interfaces include USB (Universal Serial Bus), infrared, MemoryStick Pro and wireless LAN.

The camera uses a 310,000 pixel resolution CMOS image sensor, which means images up to a maximum resolution of 640-x-480 pixels (VGA) can be taken, and the PDA also has a voice recorder function.

It measures 73.3-x-121.5-x-15.7mm and weighs 185g. The built-in rechargeable battery has enough power to last 15 days of use, which Sony defines as 30 minutes per day with the LCD backlight switched off. With the backlight switched on, the battery life will be less although Sony doesn't provide a figure for this case.

The PEG-TJ37 is similar to the PEG-TJ35, which Sony launched in the US and Europe last year, with the main difference being the addition of a digital still camera function. The camera is similar to that in the PEG-TH55 and offers the same VGA resolution. Other functions and specifications are similar to the PEG-TJ35, such as a Motorola i.MXL processor running at 200MHz, 32M bytes of RAM, a backlit colour TFT LCD panel with 320-x-320-pixel resolution and MP3 player function. The device is roughly the same size too and weighs 145g.

The PEG-TH55 and PEG-TJ37 will both launch on February 14 and will be priced at the equivalent of around £200 and £150 respectively, according to the Tokyo company. Overseas launches of each model are planned however release dates are yet to be decided, Sony said.