... mouse pad calculator with USB HUBSpecial Features* New smart design , multifunctional ,fashion and slim* Using as mouse pad , USB HUB ... * Suitable for using in office ,school and home, etc.* Multifunctional mouse pad calculator with USB HUB ,* 12-Digital arithmetic ,ultrathin ... : Solar (for calculator) / USB (for USB HUB)* Blue mood light* Memory Calculation: M+,M-,MRC* Mouse Pad: PVC housing material ...