Sharp HO EL2139HB 12 Digit Solar and Battery powered Calculator With Puctuation<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Large 12 digit LCD display with punctuation</li><li>Cost Sell Margin Keys allow for convenient calculation of cost， selling price， and margins</li><li>Twin Power Solar Operation automatically switches from solar to battery power in low light</li><li>4 Key Memory includes memory plus， memory minus， recall memory， and clear memory keys</li><li>Additional Features include grand total， percent and sign change keys， answer check function， and kick-stand display</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51PVPUIrm%2BL.jpg" noproxy>