Characteristics: 1. 100% new Real capacity micro sd card2. Higher speed and greater storage3. Compatibility and Interoperability4. Perfect for Cell Phones， Cameras， MP3/ MP4 Player etc.5. 100% Satisfaction Guaranteed!Compatibility and InteroperabilityMicro SDHC memory cards are backward compatible with electronic devices that are SD-enabled. By using an appropriate adapter， the Micro memory card can easily and quickly be inserted into any device that supports an or Mini memory card.Specificition Product name Micro SD card， TF cardCapacity 16 GBArea 165 mm2 (21)Card Volume 165 mm3 (10)Thickness 1.0 mmWeight Approx. 0.5gNumber of pins 8 pinsOperating Voltage 2.7V - 3.6VWrite-protect Switch YESCompatibility Yes (with adapter)Application All the quip that can support Mobile， MP3， MP4， Camera， Vedio.Concerning the Named capacity and Real capacity:When you are buying Hard disk， U disk or Flash disk， you will find that there will be different between the named capacity and the real capacity. For instance， it is only 38GB when it is named 40GB. Do you think it is cheating? Actually no. It's the different calculate ways between the Disk factoryand computer system.As you know， the computer system adopt binary system. So it takes 1024 Byte as one 1kB. Then 1024kB takes as 1MB. 1024MB takes as 1GB. 1024GB takes as 1TB. But the disk factory take 1000 bytes as 1KB. 1000KB as 1MB. 1000MB as 1GB. 1000GB as 1TB. So you can understand.For example: Disk factory: 8GB=8000MB=8000，000KB=8000，000，000Bytes， if computer system: 8000，000，000bytes/1024/1024/1024=7.45058GB. The hard disk need to be partied and formated. As the computer system differentia and copy files when load the system， the disk will be occupied much space. So it is different between the Named capacity and Real capacity. It is normal for 91-93% between them.