Model Number: MR-TF-512MB Key Specifications/Special Features: Bulk 2GB/4GB/8GB/16GB/32GB/64GB/128GB Micro SD Card, TF Card NameSD memory cardCapacity4GB,8GB,16GB,32GB,64GB,128GB all avaiable Read speed Class 10 Write speed Class 10 Class Class 10 Adapter TF Slot memory card adapter Dimension 11mm X 15mm X 1mm Operate Temperature 13 F to 185 F (-25 C to 85 C) Storage Temperature 40 F to 185 F (-40 C to 85 C) Certification FCC,CE,ROHS Warranty 1yearsatleast. Lifetime warranty for long cooperation customers Retail Packing Original 48MB/s Retail Packing(Please inquire us if need the photo of the retail packing)