[Featured] 1 Dual Power Option:Solar power and battery power make it works even longer 2 Large Display: Large LCD display,easy to read 3 Professional Design:Scientific button design,In line with the use of human habits and comfortable for touch 4 High Quality: Silver or Black color with gray and green button fashion style, ABS material durable plastic buttons have a good feel to them 5 Occasion:General purpose desktop calculator, perfect for home, office or store 6 A nice gift for your family,friend or colleague