Foldable solar silicone calculator, it is made of ABS+Silicone fabrics. This product is very small and portable, can be rolled up and folded in the bag, very suitable for accounting, auditing, construction industry staff. It can be solar, and it also can use button batteries. 1 location includes the shipping cost to US. Orders of 2,000 pieces or greater are eligible for sea shipping. 100% guarantee for quality. Rush Service.