Scientific Calculator， Helect 2-Line Engineering Calculator - H1002<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Robust， professional grade scientific calculator (2x L1154F battery included with 2-year usage).</li><li>2-line display: show entry and calculated result at the same time.</li><li>Easily handles 1 and 2 variable statistical calculations， three angle modes (degrees， radians， and grads)， and scientific/engineering notation modes.</li><li>Slide-off protective hard case.</li><li>Ideal for high school students， college students and professionals. Life-time warranty from Helect.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51KYCABS8tL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51n-dIKkycL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51jgZCUm-mL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51n5bNuJaCL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4180z97rlIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51PcrqAcldL.jpg" noproxy>