Texas Instruments TI 89 Titanium Graphing Calculator With Guerrilla Military Grade Screen Protector Set (Certified Reconditioned)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Graphing calculator handles calculus， algebra， matrices， and statistical functions</li><li>188 KB RAM and 2.7 MB flash memory for speed; plenty of storage for functions， programs， data</li><li>Includes all accessories + CD manual + 4 brand new AAA batteries.</li><li>Includes Guerrilla military grade screen protector set</li><li>Certified Reconditioned. Looks and works like new.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51uFZxIasfL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51c1KQQhfdL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51wnGH%2BlK%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/319pE4ht3dL.jpg" noproxy>