flash memory: 2 GB SD card slot Memory Stick PRO Duo slot Font Size: 6 sizes (XS - XXL) Supported e-book formats: EPUB, PDF, Microsoft Word, TXT, RTF, BBeB Supported audio formats: MP3, AAC Color: Silver only Wireless: 3G, Wi-Fi, Web Browser 2009 Models (Discontinued late 2010) Pocket Edition PRS-300 The PRS-300 was launched in August 2009 and it is also known as the "Pocket Edition". The PRS-300 was announced at the same time as the touch-screen PRS-600. It is Sony's smallest ever ereader as well as its entry-level device, priced at US$199. It has a smaller screen than the PRS-600, no touch interface, no MP3 audio or expandable memory. It has a similar interface to the PRS-500 and PRS-505. Specifications Display: 5 inch. Resolution: 600 × 800 pixels Dimensions LxWxD (approx.): 6 × 4 × 13/32 inches (approx. 159×108×10 mm) Weight (approx.): 220 g (7.76 oz) Gray scale: 8-levels gray scale Internal Memory: 512MiB, 440MiB accessible Font Size: 3 adjustable font sizes Battery: Sealed internal, up to two weeks of reading on a single charge MSRP: US$150 Available case colors: PRS-300BC: Navy Blue PRS-300RC: Rose Pink PRS-300SC: Silver Touch Edition PRS-600 The PRS-600 was launched in August 2009 and it is also known as the "Touch Edition". The PRS-600 was announced at the same time as the non-touch-screen PRS-300. It is Sony's middle-Range device and it priced at US$299. It is the replacement for the PRS-700 model (although it is missing the front-light feature). It is Sony's higher-scale, touch-screen edition of the ereader. It has a similar interface to the PRS-700. Unlike the PRS-700 which was only available in black, the PRS-600 is available in three colors. Note if the device is locked, using the optional 4 digit pin it will not mount via USB, the lock option needs to be disabled in order to mount the device. This edition has been criticized for having a very reflective screen, making it hard to read unless it is angled just right in relation to the light sources. This edition offers the possibility to highlight, quote or underline the text you are reading. Moreover, it comes with features such as Music player via a jack. Specifications Size: 175.3 × 121.9 × 10.2mm (6.9" × 4.8" × 0.4") Weight: 286 g (10.1 oz) Display: 6 inch. touch-screen Resolution: 600 × 800 pixels Document Search Capability Built-in Dictionary: American Oxford and English Oxford