Feaures : Multi-function Case:This small size battery case can be used as memory card is a multi-function case. Light Weight:Made of ABS Plastic,let this light weight battery card holder durable and easily carrying. Lager Compatibility:The case size is 64x56x34mm,you can put all the battery or similar size products into it. Water-resistance:It can prevent the rain water or dust into the case. There are three type you can choose : Type C :1 Battery Slot+2SD.