The Memory Stick Micro™ (M2™) is designed to meet the growing storage needs of highly compact, multifunctional mobile phones. Exchange data with standard-size Memory Stick PRO™ compatible products by inserting the M2™ into the supplied adapter. M2™ is approximately one-quarter the size of Memory Stick PRO Duo™ media, and only about 1.2 mm thick. Because it's dual-voltage it can be used with both mobile phones (1.8 volts) and Memory Stick PRO™ compatible products operating at 3.3 volts.

Scroll down to see how many pictures this card will hold.
Features:
Dual voltage: 1.8v and 3.3v
Memory Stick™ interface (serial / parallel)
Average operating current: max 65 mA (serial transfer); max 100 mA (parallel transfer)
Memory Stick PRO™ compatible
Minimum write speed: 15 Mbps
Environmental temperature: -25ºC to 85ºC non-condensing
Dimensions (W x L x T): approx. 12.5 x 15 x 1.2 mm
Weight: approx. 1 g
Supplied accessories: M2™ adapter (MSAC-MMS) - for use with normal Memory Stick™ slots.
How many pictures can fit on this card?
Uncompressed Images Per Card*
Camera
Type
Average Uncompressed
Image Size (MB)
Storage Capacity
256MB
512MB
1GB
2GB 4GB
2MP
4.32
59
118
236
473
946
3MP
5.84
43
87
175
350
700
4MP
9.50
26
53
107
215
430
5MP
12.68
20
40
80
161
323
6MP
15.20
16
33
67
134
268
Compressed Images Per Card*
Camera
Type
Average Uncompressed
Image Size (MB)
Storage Capacity
256MB
512MB
1GB
2GB 4GB
2MP
0.86
296
592
1184
2368
4736
3MP
1.17
219
438
876
1752
3504
4MP
1.90
134
269
538
1077
2154
5MP
2.54
100
201
403
807
1614
6MP
3.04
84
168
336
673
1346
. * Actual results will depend on the camera model, resolution and compression
**Based on SanDisk internal testing
***Except Europe
Note: 1 megabyte (MB) = 1 million bytes; 1 gigabyte (GB) = 1 billion bytes. Some of the listed capacity is used for formatting and other functions, and thus is not available for data storage.