Japanese giant Sony has added another two models to its PDA lineup: the TJ37 and TH55. Each handheld is to become available in Japan later this month, while no information on release schedules for other markets was available at the time of writing.

The TJ37 is media-led, as ever for Sony

The TJ37 follows the general form-factor of the TJ series, adopting a 320 x 320 16-bit display with hard grafitti area in a sleek shell, which is available in a range of colours, including blue, silver and orange. The Palm OS 5-running TJ37 will be equipped with a 200 MHz ARM processor from Sony's i.MXL range, backed up by 32 MB of DRAM and 16 MB ROM.

It also features a VGA digital camera mounted on its reverse, and comes equipped with MP3-playing functionality courtesy of Aero Player. Further media ability is found in Quicktime movie playback. All this sits in a device measuring 75 x 115 x 13 mm.

The TH55 also runs Palm OS 5.2.1 atop a 123 MHz Sony processor, this time with 32 MB of RAM and 32 MB of ROM. The display is larger, running at Sony's highest resolution of 320 x 480, which incorporates a virtual grafitti area. The display is, of course, 16-bit.

This model incorporates the same camera found in the TJ37, but also features integrated 802.11b Wi-Fi and possibly Bluetooth. Quicktime movie playback is supplemented by MPEG-1 support and a voice recorder, although oddly no mention is made of MP3 functionality on this device.

The TH55 comes in black or red and features a new transparent flip-lid designed to allow use of the new Clie Organizer application, which offers handwritten notes and images within a standard PIM view. The device measures 73.3 x 121.5 x 15.7 mm and weighs a solid 185 g.

Additional hi-res pictures of the Sony CLIE TJ37 and TH55 are available on the following pages.