Tips: Flash memory vendors are using decimal arithmetic: 1MB = 1000KB, 1G = 1000MB calculated, and the operating system using binary arithmetic: 
<br />1MB = 1024KB, 1GB = 1024MB ; 
<br />so there are some differences between display capacity and nominal capacity of flash memory products. 
<br />4G is about 3.8GB ; 8G is about 7.6GB ; 16G is about 14.4GB ; 32G is about 29GB ;
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<br />NOTE:the colour is random