http://www.sz-wholesale.com/rss/Rechargeable-Calculator.xml Rechargeable-Calculator,Wholesale Rechargeable-Calculator en-us Global Wholesale and Distribution Center http://www.sz-wholesale.com/p/Rechargeable-Calculator/Rechargeable-Calculator-7261.html This promotional 8 digit display calculator uses Faraday’s Principle of Electromagnetic Energy to operate. A magnet moving by a copper wire produces an electric current that powers the calculator. Shake it left to right non-stop 20-25 times, and enough electricity is generated to operate for 10 minutes. When the digits on the LCD screen dim, just shake it a few more times to recharge - their calculations won£§t be lost during recharging. Designed with a rubber grip, and a clear viewing window.BRbColor: /bGray w/ Red, Gray w/ Blue and Gray w/ Silver.bSize: /b3-1/4" w x 5-1/4" h x 3/4" dbPackaging: /bBulk packed. 23 lbs. / 80 pcs. Rechargeable Calculator Wholesale,