Sony PRS-505 digital book reader main specifications are:

• Dimensions: 6.9" x 4.8" x 0.3" (17.5 x 12.2 x 0.8 cm)
• Weight: 9 oz. (250 g) without soft cover
• Battery Life (Approx.): Up to 7,500 page turns
• Battery Type: Rechargeable Lithium-Ion
• Recharging Time: Approx. 4 Hours with USB charging from powered Computer or Approx. 2 Hours when using optional AC wall charger
• Display Size: 6"
• Display Type: 8-level grey scale, 170 PPI resolution, e-ink technology
• Media Formats Supported: DRM Text (BBeB Book Marlin), image (JPEG, GIF, PNG and BMP), audio (MP3 and AAC) and text (BBeB Book, TXT, RTF, PDF, Microsoft Word - conversion to the Reader requires Word installed on your PC).
• Warranty: 90 days for labor and one year for parts.
• More information: http://www.sonystyle.com
• Suggested retail price: USD 300.