... :Material:metalWeight: 20g Color: red Features:Features:l USB 2.0 Compatible (Backwards compatible to USB 1.1)l High Reading & Writing transfer ... ,512MB,1GB,2GB,4GB,8GB,16GB,32GB,64GBInterface Type:USB 2.0 compatible with USB 1.1Writing Speed:3MB/S-6MB/SReading ... Detail:1. Packing Each in a polybag,300pcs to a carton (Carton size is 42*42*36CM)2. Shipping By DHL, UPS, FEDEX,TNT etc ...