Features: 1) Capacities: 128MB-1GB 2) Dimensions: 70 x .94 x .05'' (18 x 24 x 1.4mm) 3) Dual voltage operation: at 1.8V or 3.3V 4) Operating temperature: 32 - 140癋 (0 - 60癈) 5) Storage temperature: 4 - 185癋 (-20 - 85癈) We have our own factory and sell all kinds of memory cards, such as SD card, TF card, CF card, pro duo, memory stick and MMC card. Super quality, super price, super delivery and super customer service are familiar words that our clients use to describe what we stand for. producing area:China