Speed: standard (2GB), class4 or class6 (4GB 8GB), class10 (16GB 32GB)
Dimension: 0.59" x 0.43" x 0.039" (15mm*11mm*1mm)
Operating temperature: 32°F to 140°F (0°C to 60°C)
Storage temperature: 4°F to 185°F (-20°C to 85°C) About real capacity: 4GB = approximately 3.2GB-3.8GB 8GB = approximately 6.9GB-7.4GB 16GB = approximately 14GB-15GB 32GB = approximately 28GB-30GB This is calculation difference between manufacturer and your PC, please Google 'memory card capacity' to get more information.
Speed: 4/8GB-Class 6, reading speed around 8-12MB/S, writing speed around 4.5-6.5MB/S 16GB/32GB-Class 10, reading speed around 10-15MB/S, writing speed around 8.5-11MB/S