TwinMOS´s mircoSD cards are very small size with ultra fast speed and good performance that it can be used in SD card slot through adapter. The application of microSD cards includes digital cameras, digital audio players, mobile phones, PDAs, MP3 players and other portable devices. Specifications: Capacity up to 2G Operation Temp -25°C(-13°F) ~ 85°C(185°F) Operation Volt 2.7V/ 3.6V Dimension 15(L) x 11(W) x 1(H) mm Weight 0.4g ± 5% High speed Compact size for portable devices Low power consumption; support dual voltage device Support SD system specification version 2.0