1.different capacity of micro sd card 4gb.2.Full capacity ... Features:1)Funny shapes such as wristband ,carton animal ,food ,fruit , stainless ,laser pointer ,silicon ,heart ,lighter ,wood , ... toy and ect.2) Suitable for using large capacity of computer or small size laptop3) High speed, at least ... 10 years of data retention4) Compliant with USB specification 1.1 / ...