• About this item.
• Read/write: 10MB/sec read, 3MB/sec write.
• Dual voltage operation; 1.8v for new Sony Ericsson mobile phones, 3.3v for Memory Stick PRO Duo compatible devices.
• Controlled ejection design allows for easier removal.
• Sony Magicgate encryption technology support.
• SDMSM2-4096/004G bulk.

From the Manufacturer --------------------- SanDisk® Memory Stick Micro™ (M2™) Card 4GB You’re the boss of your phone. Show it you mean business. Memory Stick Micro makes it easy to start packing your Sony Ericsson phone with all the stuff you wish you could fit in your pocket. Wake up your phone with: More tunes — up to 500 songs—perfect for some heavy-duty marathon training More photos — over 1,200 of them—so you’ll never miss a photo opp More movies and videos — up to 9.5 hours worth—great for your next flight from Anchorage to Atlanta More games — your thumb will probably up before you can play them all 11 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. 2Number of MP3s. Approximation based on 4-minute MP3 songs at 128 Kbps. 3JPEG images. Approximation based on 5MP camera. Actual number of photos may vary based on phone model, resolution and compression. 4Length in hours. Approximation for MPEG-4 video at 1.5Mbps. Actual time may vary based on resolution and compression. 5Memory space for e-mail or games. Actual data size varies by the country and region. Check with GPS Navigation data provider for actual memory space required. © 2009 SanDisk Corporation. All rights reserved. Other brand names mentioned herein are for identification purposes only and may be trademarks of their respective owners. Choose SanDisk, the minds behind flash memory As the pioneers of flash memory, SanDisk is known all over the planet. Wherever people take pictures, listen to music, use cell phones—or do much of anything at all with digital devices—they’re likely to be using a SanDisk memory card. That’s because, after 20 years in the business, SanDisk is still making some of the most trusted memory products anywhere.