I buyed this PDA for its cheap price and available storage price. Casio has built this pda completely revamping the old PV series in this. It has got New Faster Processor and huge memory to store a lot of data. Main Features of this is are : * 16 MB Memory * Contacts * Memo * Expense function * Quick Memo * Multi Lingual * Back Lite * Excel / spread sheet * Games * Sync with MS Outlook Pocket Referencer, PV Applications File Transfer Manager, Travel Phrase Guide PIM (Personal Infomation manager) Bonus Add-in Software Bundled Conversion, Pop up Tools With options of Lot of Available softwares which can be downloaded from net. Casio has released Development software with Source code (can be downloaded fm Casio.com) to write programs for it. Specifications ---------------- PV-S1600 Memory capacity: 16MB (User Area + Add-in:12MB) (OS:4MB) *PV Application Display: 160 x 160 dots Power supply AAA-size battery (LR03) x 2 Battery life (Approx.) 120 hours (2) 60 hours (*3) Dimensions (H x W x D (mm)) F - Folded, U - Unfolded F - 14 x 83 x 139.5 U - 11.8 x 83 x 131.5 Weight (Approx.(g), Including batteries) 155 It has 55 minutes of continuous display and 5 minutes of processing operation, plus 3 minutes of backlight operation per hour under Ideal Battery Conditions. Overall This PDA is recommended for those users who want a good pocket viewer with Many PDA functions at Cheap Price. Thanks Mogi...