1) 1.4mm (thickness) x 20mm (width) x 21.5mm (length), 9 pins, 0.8g
2) Memory capacity: 64MB, 128MB, 256MB, 512MB,1G,2G
3) Compliant with SD system V1.02m and specific V1.0 specification, SPI
4) 25Mbps per data line with max. 100Mbps (12.5Mbps)
5) Read / write specifications: 512 bytes block read / write plus multi-block
read / write capability
6) Read / write current: 30mA / 40mA
7) Operating voltage: 2.7-3.6V
8) Operating temperature: -25-85H
9) Variable clock rate: 0-25MHz

Other memory cards available:

Micro SD(TransFlash)

Sony-MS

CF,

SD(Secure Gigital)

MMC, RS-MMC,

M2,

SD Ultra II,

SD Extreme III,

CF Ultra II,

CF Extreme III

and so on.