Sharp EL-506XBWH Engineering/Scientific Calculator<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Advanced Direct Algebraic Logic Series scientific calculator</li><li>Ideal for high school students， college students， and professionals</li><li>440 functions including differential and integral calculus</li><li>Large 12-digit， 2-line display， multi-line playback</li><li>Convenient solar and battery power supplies</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51D5HrNtcML.jpg" noproxy>