Do you find it is a little trouble to check your bill when you pay things? Though a mobile phone has a calculation function, it is not convenient enough. Now, solar card calculator will help you.
It is a unique calculator with the appearance of a credit card, with simple math calculation by using solar as power, which is small, thin and beautiful. You can take it easily in a purse, pocket, backpack or anywhere and anytime you want.
It works easily under solar power or lighting, so it is portable and environmentally protective. This practical calculator is ideal for travelers, accountants, students and bankers. It is made of ABS and electronic components. Its size is 8.6×5.4×0.22cm while its weight is 22g.