VICTOR TECHNOLOGY Pad Holder with Calculator, 9-1/4 x 12-1/2 x 1/2 Inches, Black (VCT1135BLK) Letter-size pad holder features soft-touch back and front covers with protected, metal corners Functions include three-key independent memory, percent, square root and automatic constants Pads Eight-digit calculator operates on solar power with battery backup Pad holder comes with pen and pad